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Finding the Fourth Proportional to 257,120.59, 385,929.65 and 124,094.50

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Solution

The fourth proportional to 257,120.59, 385,929.65 and 124,094.50 is: 186,261.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,120.59 : 385,929.65 = 124,094.50 : x
  2. Step 2: Convert to fraction form
    257,120.59/385,929.65 = 124,094.50/x
  3. Step 3: Cross multiply
    257,120.59x = 385,929.65 × 124,094.50
  4. Step 4: Simplify right side
    257,120.59x = 47,891,746,951.93
  5. Step 5: Solve for x
    x = 47,891,746,951.93/257,120.59
  6. Step 6: Final answer
    x = 186,261.81

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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.