Home / 447,619.78-617,715.28-243,672.18

Finding the Fourth Proportional to 447,619.78, 617,715.28 and 243,672.18

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Solution

The fourth proportional to 447,619.78, 617,715.28 and 243,672.18 is: 336,267.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,619.78 : 617,715.28 = 243,672.18 : x
  2. Step 2: Convert to fraction form
    447,619.78/617,715.28 = 243,672.18/x
  3. Step 3: Cross multiply
    447,619.78x = 617,715.28 × 243,672.18
  4. Step 4: Simplify right side
    447,619.78x = 150,520,026,885.07
  5. Step 5: Solve for x
    x = 150,520,026,885.07/447,619.78
  6. Step 6: Final answer
    x = 336,267.59

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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.