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Finding the Fourth Proportional to 238,068.80, 328,518.87 and 130,645.72

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Solution

The fourth proportional to 238,068.80, 328,518.87 and 130,645.72 is: 180,282.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,068.80 : 328,518.87 = 130,645.72 : x
  2. Step 2: Convert to fraction form
    238,068.80/328,518.87 = 130,645.72/x
  3. Step 3: Cross multiply
    238,068.80x = 328,518.87 × 130,645.72
  4. Step 4: Simplify right side
    238,068.80x = 42,919,584,304.74
  5. Step 5: Solve for x
    x = 42,919,584,304.74/238,068.80
  6. Step 6: Final answer
    x = 180,282.27

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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.