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Finding the Fourth Proportional to 247,036.65, 370,591.88 and 78,562.47

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Solution

The fourth proportional to 247,036.65, 370,591.88 and 78,562.47 is: 117,855.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,036.65 : 370,591.88 = 78,562.47 : x
  2. Step 2: Convert to fraction form
    247,036.65/370,591.88 = 78,562.47/x
  3. Step 3: Cross multiply
    247,036.65x = 370,591.88 × 78,562.47
  4. Step 4: Simplify right side
    247,036.65x = 29,114,614,693.44
  5. Step 5: Solve for x
    x = 29,114,614,693.44/247,036.65
  6. Step 6: Final answer
    x = 117,855.45

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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.