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Finding the Fourth Proportional to 253,015.61, 379,585.71 and 178,281.68

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Solution

The fourth proportional to 253,015.61, 379,585.71 and 178,281.68 is: 267,466.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,015.61 : 379,585.71 = 178,281.68 : x
  2. Step 2: Convert to fraction form
    253,015.61/379,585.71 = 178,281.68/x
  3. Step 3: Cross multiply
    253,015.61x = 379,585.71 × 178,281.68
  4. Step 4: Simplify right side
    253,015.61x = 67,673,178,082.79
  5. Step 5: Solve for x
    x = 67,673,178,082.79/253,015.61
  6. Step 6: Final answer
    x = 267,466.41

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.