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Finding the Fourth Proportional to 342,193.76, 513,246.89 and 142,476.92

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Solution

The fourth proportional to 342,193.76, 513,246.89 and 142,476.92 is: 213,697.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,193.76 : 513,246.89 = 142,476.92 : x
  2. Step 2: Convert to fraction form
    342,193.76/513,246.89 = 142,476.92/x
  3. Step 3: Cross multiply
    342,193.76x = 513,246.89 × 142,476.92
  4. Step 4: Simplify right side
    342,193.76x = 73,125,835,374.39
  5. Step 5: Solve for x
    x = 73,125,835,374.39/342,193.76
  6. Step 6: Final answer
    x = 213,697.16

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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.