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Finding the Fourth Proportional to 238,209.44, 328,731.40 and 129,314.63

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Solution

The fourth proportional to 238,209.44, 328,731.40 and 129,314.63 is: 178,455.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,209.44 : 328,731.40 = 129,314.63 : x
  2. Step 2: Convert to fraction form
    238,209.44/328,731.40 = 129,314.63/x
  3. Step 3: Cross multiply
    238,209.44x = 328,731.40 × 129,314.63
  4. Step 4: Simplify right side
    238,209.44x = 42,509,777,070.15
  5. Step 5: Solve for x
    x = 42,509,777,070.15/238,209.44
  6. Step 6: Final answer
    x = 178,455.47

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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.