Home / 351,625.12-527,430.39-85,387.03

Finding the Fourth Proportional to 351,625.12, 527,430.39 and 85,387.03

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Solution

The fourth proportional to 351,625.12, 527,430.39 and 85,387.03 is: 128,078.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,625.12 : 527,430.39 = 85,387.03 : x
  2. Step 2: Convert to fraction form
    351,625.12/527,430.39 = 85,387.03/x
  3. Step 3: Cross multiply
    351,625.12x = 527,430.39 × 85,387.03
  4. Step 4: Simplify right side
    351,625.12x = 45,035,712,895.06
  5. Step 5: Solve for x
    x = 45,035,712,895.06/351,625.12
  6. Step 6: Final answer
    x = 128,078.77

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.