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Finding the Fourth Proportional to 238,314.78, 328,876.65 and 130,887

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Solution

The fourth proportional to 238,314.78, 328,876.65 and 130,887 is: 180,625.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,314.78 : 328,876.65 = 130,887 : x
  2. Step 2: Convert to fraction form
    238,314.78/328,876.65 = 130,887/x
  3. Step 3: Cross multiply
    238,314.78x = 328,876.65 × 130,887
  4. Step 4: Simplify right side
    238,314.78x = 43,045,678,088.55
  5. Step 5: Solve for x
    x = 43,045,678,088.55/238,314.78
  6. Step 6: Final answer
    x = 180,625.30

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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.