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Finding the Fourth Proportional to 527,289.78, 791,069.49 and 153,312.78

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Solution

The fourth proportional to 527,289.78, 791,069.49 and 153,312.78 is: 230,008.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,289.78 : 791,069.49 = 153,312.78 : x
  2. Step 2: Convert to fraction form
    527,289.78/791,069.49 = 153,312.78/x
  3. Step 3: Cross multiply
    527,289.78x = 791,069.49 × 153,312.78
  4. Step 4: Simplify right side
    527,289.78x = 121,281,062,685.08
  5. Step 5: Solve for x
    x = 121,281,062,685.08/527,289.78
  6. Step 6: Final answer
    x = 230,008.37

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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.