Home / 238,139.07-328,580.60-137,478.75

Finding the Fourth Proportional to 238,139.07, 328,580.60 and 137,478.75

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Solution

The fourth proportional to 238,139.07, 328,580.60 and 137,478.75 is: 189,691.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,139.07 : 328,580.60 = 137,478.75 : x
  2. Step 2: Convert to fraction form
    238,139.07/328,580.60 = 137,478.75/x
  3. Step 3: Cross multiply
    238,139.07x = 328,580.60 × 137,478.75
  4. Step 4: Simplify right side
    238,139.07x = 45,172,849,474.86
  5. Step 5: Solve for x
    x = 45,172,849,474.86/238,139.07
  6. Step 6: Final answer
    x = 189,691.05

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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.