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Finding the Fourth Proportional to 522,681.20, 784,281 and 207,131.12

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Solution

The fourth proportional to 522,681.20, 784,281 and 207,131.12 is: 310,799.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,681.20 : 784,281 = 207,131.12 : x
  2. Step 2: Convert to fraction form
    522,681.20/784,281 = 207,131.12/x
  3. Step 3: Cross multiply
    522,681.20x = 784,281 × 207,131.12
  4. Step 4: Simplify right side
    522,681.20x = 162,449,001,924.72
  5. Step 5: Solve for x
    x = 162,449,001,924.72/522,681.20
  6. Step 6: Final answer
    x = 310,799.40

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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.