Home / 309,691,168,748.28-427,317,079,274.40-172,510,581,137.88

Finding the Fourth Proportional to 309,691,168,748.28, 427,317,079,274.40 and 172,510,581,137.88

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Solution

The fourth proportional to 309,691,168,748.28, 427,317,079,274.40 and 172,510,581,137.88 is: 238,032,999,047.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,691,168,748.28 : 427,317,079,274.40 = 172,510,581,137.88 : x
  2. Step 2: Convert to fraction form
    309,691,168,748.28/427,317,079,274.40 = 172,510,581,137.88/x
  3. Step 3: Cross multiply
    309,691,168,748.28x = 427,317,079,274.40 × 172,510,581,137.88
  4. Step 4: Simplify right side
    309,691,168,748.28x = 73,716,717,675,768,287,592,448
  5. Step 5: Solve for x
    x = 73,716,717,675,768,287,592,448/309,691,168,748.28
  6. Step 6: Final answer
    x = 238,032,999,047.79

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.