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Finding the Fourth Proportional to 342,479.70, 513,719.55 and 248,001.30

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Solution

The fourth proportional to 342,479.70, 513,719.55 and 248,001.30 is: 372,001.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,479.70 : 513,719.55 = 248,001.30 : x
  2. Step 2: Convert to fraction form
    342,479.70/513,719.55 = 248,001.30/x
  3. Step 3: Cross multiply
    342,479.70x = 513,719.55 × 248,001.30
  4. Step 4: Simplify right side
    342,479.70x = 127,403,116,235.42
  5. Step 5: Solve for x
    x = 127,403,116,235.42/342,479.70
  6. Step 6: Final answer
    x = 372,001.95

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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.