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Finding the Fourth Proportional to 347,780.40, 522,304.20 and 207,812.40

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Solution

The fourth proportional to 347,780.40, 522,304.20 and 207,812.40 is: 312,097.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,780.40 : 522,304.20 = 207,812.40 : x
  2. Step 2: Convert to fraction form
    347,780.40/522,304.20 = 207,812.40/x
  3. Step 3: Cross multiply
    347,780.40x = 522,304.20 × 207,812.40
  4. Step 4: Simplify right side
    347,780.40x = 108,541,289,332.08
  5. Step 5: Solve for x
    x = 108,541,289,332.08/347,780.40
  6. Step 6: Final answer
    x = 312,097.20

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1.5x scale

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.