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Finding the Fourth Proportional to 385,159.68, 577,768.68 and 104,672.88

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Solution

The fourth proportional to 385,159.68, 577,768.68 and 104,672.88 is: 157,017.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,159.68 : 577,768.68 = 104,672.88 : x
  2. Step 2: Convert to fraction form
    385,159.68/577,768.68 = 104,672.88/x
  3. Step 3: Cross multiply
    385,159.68x = 577,768.68 × 104,672.88
  4. Step 4: Simplify right side
    385,159.68x = 60,476,711,709.40
  5. Step 5: Solve for x
    x = 60,476,711,709.40/385,159.68
  6. Step 6: Final answer
    x = 157,017.24

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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.