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Finding the Fourth Proportional to 239,518.64, 330,524.60 and 137,472.28

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Solution

The fourth proportional to 239,518.64, 330,524.60 and 137,472.28 is: 189,705.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,518.64 : 330,524.60 = 137,472.28 : x
  2. Step 2: Convert to fraction form
    239,518.64/330,524.60 = 137,472.28/x
  3. Step 3: Cross multiply
    239,518.64x = 330,524.60 × 137,472.28
  4. Step 4: Simplify right side
    239,518.64x = 45,437,968,705.47
  5. Step 5: Solve for x
    x = 45,437,968,705.47/239,518.64
  6. Step 6: Final answer
    x = 189,705.36

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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.