Home / 387,005.85-580,225.68-260,331.17

Finding the Fourth Proportional to 387,005.85, 580,225.68 and 260,331.17

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Solution

The fourth proportional to 387,005.85, 580,225.68 and 260,331.17 is: 390,306.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,005.85 : 580,225.68 = 260,331.17 : x
  2. Step 2: Convert to fraction form
    387,005.85/580,225.68 = 260,331.17/x
  3. Step 3: Cross multiply
    387,005.85x = 580,225.68 × 260,331.17
  4. Step 4: Simplify right side
    387,005.85x = 151,050,827,237.32
  5. Step 5: Solve for x
    x = 151,050,827,237.32/387,005.85
  6. Step 6: Final answer
    x = 390,306.32

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1.5x scale

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.