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Finding the Fourth Proportional to 260,046.60, 390,069.90 and 229,979.40

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Solution

The fourth proportional to 260,046.60, 390,069.90 and 229,979.40 is: 344,969.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,046.60 : 390,069.90 = 229,979.40 : x
  2. Step 2: Convert to fraction form
    260,046.60/390,069.90 = 229,979.40/x
  3. Step 3: Cross multiply
    260,046.60x = 390,069.90 × 229,979.40
  4. Step 4: Simplify right side
    260,046.60x = 89,708,041,560.06
  5. Step 5: Solve for x
    x = 89,708,041,560.06/260,046.60
  6. Step 6: Final answer
    x = 344,969.10

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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.