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Finding the Fourth Proportional to 238,281.60, 328,829.50 and 129,386.08

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Solution

The fourth proportional to 238,281.60, 328,829.50 and 129,386.08 is: 178,553.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,281.60 : 328,829.50 = 129,386.08 : x
  2. Step 2: Convert to fraction form
    238,281.60/328,829.50 = 129,386.08/x
  3. Step 3: Cross multiply
    238,281.60x = 328,829.50 × 129,386.08
  4. Step 4: Simplify right side
    238,281.60x = 42,545,958,349.21
  5. Step 5: Solve for x
    x = 42,545,958,349.21/238,281.60
  6. Step 6: Final answer
    x = 178,553.27

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1.5x scale

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.