Home / 283,415.16-391,130.61-156,090.72

Finding the Fourth Proportional to 283,415.16, 391,130.61 and 156,090.72

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Solution

The fourth proportional to 283,415.16, 391,130.61 and 156,090.72 is: 215,414.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,415.16 : 391,130.61 = 156,090.72 : x
  2. Step 2: Convert to fraction form
    283,415.16/391,130.61 = 156,090.72/x
  3. Step 3: Cross multiply
    283,415.16x = 391,130.61 × 156,090.72
  4. Step 4: Simplify right side
    283,415.16x = 61,051,858,528.94
  5. Step 5: Solve for x
    x = 61,051,858,528.94/283,415.16
  6. Step 6: Final answer
    x = 215,414.94

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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.