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Finding the Fourth Proportional to 238,340.63, 328,915.23 and 130,916.55

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Solution

The fourth proportional to 238,340.63, 328,915.23 and 130,916.55 is: 180,667.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,340.63 : 328,915.23 = 130,916.55 : x
  2. Step 2: Convert to fraction form
    238,340.63/328,915.23 = 130,916.55/x
  3. Step 3: Cross multiply
    238,340.63x = 328,915.23 × 130,916.55
  4. Step 4: Simplify right side
    238,340.63x = 43,060,448,632.96
  5. Step 5: Solve for x
    x = 43,060,448,632.96/238,340.63
  6. Step 6: Final answer
    x = 180,667.68

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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.