Home / 402,134.13-555,160.55-310,052.30

Finding the Fourth Proportional to 402,134.13, 555,160.55 and 310,052.30

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Solution

The fourth proportional to 402,134.13, 555,160.55 and 310,052.30 is: 428,038.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,134.13 : 555,160.55 = 310,052.30 : x
  2. Step 2: Convert to fraction form
    402,134.13/555,160.55 = 310,052.30/x
  3. Step 3: Cross multiply
    402,134.13x = 555,160.55 × 310,052.30
  4. Step 4: Simplify right side
    402,134.13x = 172,128,801,070.70
  5. Step 5: Solve for x
    x = 172,128,801,070.70/402,134.13
  6. Step 6: Final answer
    x = 428,038.28

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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.