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Finding the Fourth Proportional to 352,909.97, 529,232.47 and 128,214.89

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Solution

The fourth proportional to 352,909.97, 529,232.47 and 128,214.89 is: 192,274.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,909.97 : 529,232.47 = 128,214.89 : x
  2. Step 2: Convert to fraction form
    352,909.97/529,232.47 = 128,214.89/x
  3. Step 3: Cross multiply
    352,909.97x = 529,232.47 × 128,214.89
  4. Step 4: Simplify right side
    352,909.97x = 67,855,482,925.48
  5. Step 5: Solve for x
    x = 67,855,482,925.48/352,909.97
  6. Step 6: Final answer
    x = 192,274.20

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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.