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Finding the Fourth Proportional to 260,030.70, 390,046.05 and 159,866.10

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Solution

The fourth proportional to 260,030.70, 390,046.05 and 159,866.10 is: 239,799.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,030.70 : 390,046.05 = 159,866.10 : x
  2. Step 2: Convert to fraction form
    260,030.70/390,046.05 = 159,866.10/x
  3. Step 3: Cross multiply
    260,030.70x = 390,046.05 × 159,866.10
  4. Step 4: Simplify right side
    260,030.70x = 62,355,140,833.91
  5. Step 5: Solve for x
    x = 62,355,140,833.91/260,030.70
  6. Step 6: Final answer
    x = 239,799.15

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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.