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Finding the Fourth Proportional to 615,542.40, 922,276.80 and 299,318.40

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Solution

The fourth proportional to 615,542.40, 922,276.80 and 299,318.40 is: 448,473.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,542.40 : 922,276.80 = 299,318.40 : x
  2. Step 2: Convert to fraction form
    615,542.40/922,276.80 = 299,318.40/x
  3. Step 3: Cross multiply
    615,542.40x = 922,276.80 × 299,318.40
  4. Step 4: Simplify right side
    615,542.40x = 276,054,416,133.12
  5. Step 5: Solve for x
    x = 276,054,416,133.12/615,542.40
  6. Step 6: Final answer
    x = 448,473.44

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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.