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Finding the Fourth Proportional to 237,878.88, 328,249.20 and 137,309.28

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Solution

The fourth proportional to 237,878.88, 328,249.20 and 137,309.28 is: 189,473.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    237,878.88 : 328,249.20 = 137,309.28 : x
  2. Step 2: Convert to fraction form
    237,878.88/328,249.20 = 137,309.28/x
  3. Step 3: Cross multiply
    237,878.88x = 328,249.20 × 137,309.28
  4. Step 4: Simplify right side
    237,878.88x = 45,071,661,312.58
  5. Step 5: Solve for x
    x = 45,071,661,312.58/237,878.88
  6. Step 6: Final answer
    x = 189,473.15

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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.