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Finding the Fourth Proportional to 615,211.90, 922,947.45 and 260,043.10

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Solution

The fourth proportional to 615,211.90, 922,947.45 and 260,043.10 is: 390,119.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,211.90 : 922,947.45 = 260,043.10 : x
  2. Step 2: Convert to fraction form
    615,211.90/922,947.45 = 260,043.10/x
  3. Step 3: Cross multiply
    615,211.90x = 922,947.45 × 260,043.10
  4. Step 4: Simplify right side
    615,211.90x = 240,006,116,035.10
  5. Step 5: Solve for x
    x = 240,006,116,035.10/615,211.90
  6. Step 6: Final answer
    x = 390,119.43

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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.