Home / 236,748.50-326,711-129,318.56

Finding the Fourth Proportional to 236,748.50, 326,711 and 129,318.56

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Solution

The fourth proportional to 236,748.50, 326,711 and 129,318.56 is: 178,458.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,748.50 : 326,711 = 129,318.56 : x
  2. Step 2: Convert to fraction form
    236,748.50/326,711 = 129,318.56/x
  3. Step 3: Cross multiply
    236,748.50x = 326,711 × 129,318.56
  4. Step 4: Simplify right side
    236,748.50x = 42,249,796,056.16
  5. Step 5: Solve for x
    x = 42,249,796,056.16/236,748.50
  6. Step 6: Final answer
    x = 178,458.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.