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Finding the Fourth Proportional to 382,898.32, 528,391 and 239,737.36

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Solution

The fourth proportional to 382,898.32, 528,391 and 239,737.36 is: 330,832.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,898.32 : 528,391 = 239,737.36 : x
  2. Step 2: Convert to fraction form
    382,898.32/528,391 = 239,737.36/x
  3. Step 3: Cross multiply
    382,898.32x = 528,391 × 239,737.36
  4. Step 4: Simplify right side
    382,898.32x = 126,675,063,387.76
  5. Step 5: Solve for x
    x = 126,675,063,387.76/382,898.32
  6. Step 6: Final answer
    x = 330,832.12

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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.