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Finding the Fourth Proportional to 615,011.88, 922,928.22 and 215,652.36

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Solution

The fourth proportional to 615,011.88, 922,928.22 and 215,652.36 is: 323,622.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,011.88 : 922,928.22 = 215,652.36 : x
  2. Step 2: Convert to fraction form
    615,011.88/922,928.22 = 215,652.36/x
  3. Step 3: Cross multiply
    615,011.88x = 922,928.22 × 215,652.36
  4. Step 4: Simplify right side
    615,011.88x = 199,031,648,753.60
  5. Step 5: Solve for x
    x = 199,031,648,753.60/615,011.88
  6. Step 6: Final answer
    x = 323,622.45

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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.