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Finding the Fourth Proportional to 379,807.60, 569,711.40 and 245,963.20

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Solution

The fourth proportional to 379,807.60, 569,711.40 and 245,963.20 is: 368,944.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,807.60 : 569,711.40 = 245,963.20 : x
  2. Step 2: Convert to fraction form
    379,807.60/569,711.40 = 245,963.20/x
  3. Step 3: Cross multiply
    379,807.60x = 569,711.40 × 245,963.20
  4. Step 4: Simplify right side
    379,807.60x = 140,128,039,020.48
  5. Step 5: Solve for x
    x = 140,128,039,020.48/379,807.60
  6. Step 6: Final answer
    x = 368,944.80

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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.