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Finding the Fourth Proportional to 347,140.40, 520,710.62 and 147,320.66

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Solution

The fourth proportional to 347,140.40, 520,710.62 and 147,320.66 is: 220,981.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,140.40 : 520,710.62 = 147,320.66 : x
  2. Step 2: Convert to fraction form
    347,140.40/520,710.62 = 147,320.66/x
  3. Step 3: Cross multiply
    347,140.40x = 520,710.62 × 147,320.66
  4. Step 4: Simplify right side
    347,140.40x = 76,711,432,772.58
  5. Step 5: Solve for x
    x = 76,711,432,772.58/347,140.40
  6. Step 6: Final answer
    x = 220,981.00

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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.