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Finding the Fourth Proportional to 238,339.45, 328,907.68 and 130,916.17

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Solution

The fourth proportional to 238,339.45, 328,907.68 and 130,916.17 is: 180,663.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,339.45 : 328,907.68 = 130,916.17 : x
  2. Step 2: Convert to fraction form
    238,339.45/328,907.68 = 130,916.17/x
  3. Step 3: Cross multiply
    238,339.45x = 328,907.68 × 130,916.17
  4. Step 4: Simplify right side
    238,339.45x = 43,059,333,749.19
  5. Step 5: Solve for x
    x = 43,059,333,749.19/238,339.45
  6. Step 6: Final answer
    x = 180,663.90

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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.