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Finding the Fourth Proportional to 461,479.40, 691,830.30 and 239,863.40

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Solution

The fourth proportional to 461,479.40, 691,830.30 and 239,863.40 is: 359,593.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    461,479.40 : 691,830.30 = 239,863.40 : x
  2. Step 2: Convert to fraction form
    461,479.40/691,830.30 = 239,863.40/x
  3. Step 3: Cross multiply
    461,479.40x = 691,830.30 × 239,863.40
  4. Step 4: Simplify right side
    461,479.40x = 165,944,767,981.02
  5. Step 5: Solve for x
    x = 165,944,767,981.02/461,479.40
  6. Step 6: Final answer
    x = 359,593.01

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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.