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Finding the Fourth Proportional to 238,175.76, 328,708.70 and 136,210.71

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Solution

The fourth proportional to 238,175.76, 328,708.70 and 136,210.71 is: 187,985.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,175.76 : 328,708.70 = 136,210.71 : x
  2. Step 2: Convert to fraction form
    238,175.76/328,708.70 = 136,210.71/x
  3. Step 3: Cross multiply
    238,175.76x = 328,708.70 × 136,210.71
  4. Step 4: Simplify right side
    238,175.76x = 44,773,644,729.12
  5. Step 5: Solve for x
    x = 44,773,644,729.12/238,175.76
  6. Step 6: Final answer
    x = 187,985.73

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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.