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Finding the Fourth Proportional to 257,068.80, 385,188.48 and 132,030.72

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Solution

The fourth proportional to 257,068.80, 385,188.48 and 132,030.72 is: 197,833.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,068.80 : 385,188.48 = 132,030.72 : x
  2. Step 2: Convert to fraction form
    257,068.80/385,188.48 = 132,030.72/x
  3. Step 3: Cross multiply
    257,068.80x = 385,188.48 × 132,030.72
  4. Step 4: Simplify right side
    257,068.80x = 50,856,712,350.11
  5. Step 5: Solve for x
    x = 50,856,712,350.11/257,068.80
  6. Step 6: Final answer
    x = 197,833.08

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.