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Finding the Fourth Proportional to 354,658.20, 531,209.70 and 308,002.20

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Solution

The fourth proportional to 354,658.20, 531,209.70 and 308,002.20 is: 461,327.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,658.20 : 531,209.70 = 308,002.20 : x
  2. Step 2: Convert to fraction form
    354,658.20/531,209.70 = 308,002.20/x
  3. Step 3: Cross multiply
    354,658.20x = 531,209.70 × 308,002.20
  4. Step 4: Simplify right side
    354,658.20x = 163,613,756,261.34
  5. Step 5: Solve for x
    x = 163,613,756,261.34/354,658.20
  6. Step 6: Final answer
    x = 461,327.99

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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.