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Finding the Fourth Proportional to 239,514.60, 330,515.01 and 137,468.21

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Solution

The fourth proportional to 239,514.60, 330,515.01 and 137,468.21 is: 189,697.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,514.60 : 330,515.01 = 137,468.21 : x
  2. Step 2: Convert to fraction form
    239,514.60/330,515.01 = 137,468.21/x
  3. Step 3: Cross multiply
    239,514.60x = 330,515.01 × 137,468.21
  4. Step 4: Simplify right side
    239,514.60x = 45,435,307,552.35
  5. Step 5: Solve for x
    x = 45,435,307,552.35/239,514.60
  6. Step 6: Final answer
    x = 189,697.45

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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.