Home / 425,439.48-638,552.94-215,225.04

Finding the Fourth Proportional to 425,439.48, 638,552.94 and 215,225.04

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Solution

The fourth proportional to 425,439.48, 638,552.94 and 215,225.04 is: 323,036.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,439.48 : 638,552.94 = 215,225.04 : x
  2. Step 2: Convert to fraction form
    425,439.48/638,552.94 = 215,225.04/x
  3. Step 3: Cross multiply
    425,439.48x = 638,552.94 × 215,225.04
  4. Step 4: Simplify right side
    425,439.48x = 137,432,582,053.62
  5. Step 5: Solve for x
    x = 137,432,582,053.62/425,439.48
  6. Step 6: Final answer
    x = 323,036.74

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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.