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Finding the Fourth Proportional to 238,325.71, 328,888.35 and 129,429.28

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Solution

The fourth proportional to 238,325.71, 328,888.35 and 129,429.28 is: 178,611.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,325.71 : 328,888.35 = 129,429.28 : x
  2. Step 2: Convert to fraction form
    238,325.71/328,888.35 = 129,429.28/x
  3. Step 3: Cross multiply
    238,325.71x = 328,888.35 × 129,429.28
  4. Step 4: Simplify right side
    238,325.71x = 42,567,782,289.50
  5. Step 5: Solve for x
    x = 42,567,782,289.50/238,325.71
  6. Step 6: Final answer
    x = 178,611.80

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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.