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Finding the Fourth Proportional to 342,645.02, 513,034.41 and 266,479.10

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Solution

The fourth proportional to 342,645.02, 513,034.41 and 266,479.10 is: 398,992.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,645.02 : 513,034.41 = 266,479.10 : x
  2. Step 2: Convert to fraction form
    342,645.02/513,034.41 = 266,479.10/x
  3. Step 3: Cross multiply
    342,645.02x = 513,034.41 × 266,479.10
  4. Step 4: Simplify right side
    342,645.02x = 136,712,947,845.83
  5. Step 5: Solve for x
    x = 136,712,947,845.83/342,645.02
  6. Step 6: Final answer
    x = 398,992.95

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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.