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Finding the Fourth Proportional to 615,042.80, 922,564.20 and 283,266.80

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Solution

The fourth proportional to 615,042.80, 922,564.20 and 283,266.80 is: 424,900.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,042.80 : 922,564.20 = 283,266.80 : x
  2. Step 2: Convert to fraction form
    615,042.80/922,564.20 = 283,266.80/x
  3. Step 3: Cross multiply
    615,042.80x = 922,564.20 × 283,266.80
  4. Step 4: Simplify right side
    615,042.80x = 261,331,808,728.56
  5. Step 5: Solve for x
    x = 261,331,808,728.56/615,042.80
  6. Step 6: Final answer
    x = 424,900.20

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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.