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Finding the Fourth Proportional to 347,605.20, 521,602.20 and 147,891.60

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Solution

The fourth proportional to 347,605.20, 521,602.20 and 147,891.60 is: 221,920.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,605.20 : 521,602.20 = 147,891.60 : x
  2. Step 2: Convert to fraction form
    347,605.20/521,602.20 = 147,891.60/x
  3. Step 3: Cross multiply
    347,605.20x = 521,602.20 × 147,891.60
  4. Step 4: Simplify right side
    347,605.20x = 77,140,583,921.52
  5. Step 5: Solve for x
    x = 77,140,583,921.52/347,605.20
  6. Step 6: Final answer
    x = 221,920.11

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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.