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Finding the Fourth Proportional to 492,119.28, 679,124.61 and 265,764.78

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Solution

The fourth proportional to 492,119.28, 679,124.61 and 265,764.78 is: 366,755.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,119.28 : 679,124.61 = 265,764.78 : x
  2. Step 2: Convert to fraction form
    492,119.28/679,124.61 = 265,764.78/x
  3. Step 3: Cross multiply
    492,119.28x = 679,124.61 × 265,764.78
  4. Step 4: Simplify right side
    492,119.28x = 180,487,402,569.24
  5. Step 5: Solve for x
    x = 180,487,402,569.24/492,119.28
  6. Step 6: Final answer
    x = 366,755.40

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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.