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Finding the Fourth Proportional to 382,903.54, 528,398.13 and 239,742.52

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Solution

The fourth proportional to 382,903.54, 528,398.13 and 239,742.52 is: 330,839.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,903.54 : 528,398.13 = 239,742.52 : x
  2. Step 2: Convert to fraction form
    382,903.54/528,398.13 = 239,742.52/x
  3. Step 3: Cross multiply
    382,903.54x = 528,398.13 × 239,742.52
  4. Step 4: Simplify right side
    382,903.54x = 126,679,498,827.53
  5. Step 5: Solve for x
    x = 126,679,498,827.53/382,903.54
  6. Step 6: Final answer
    x = 330,839.20

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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.