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Finding the Fourth Proportional to 239,501.86, 330,498.57 and 137,503.78

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Solution

The fourth proportional to 239,501.86, 330,498.57 and 137,503.78 is: 189,747.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,501.86 : 330,498.57 = 137,503.78 : x
  2. Step 2: Convert to fraction form
    239,501.86/330,498.57 = 137,503.78/x
  3. Step 3: Cross multiply
    239,501.86x = 330,498.57 × 137,503.78
  4. Step 4: Simplify right side
    239,501.86x = 45,444,802,659.59
  5. Step 5: Solve for x
    x = 45,444,802,659.59/239,501.86
  6. Step 6: Final answer
    x = 189,747.18

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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.