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Finding the Fourth Proportional to 260,067.48, 390,155.76 and 147,799.68

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Solution

The fourth proportional to 260,067.48, 390,155.76 and 147,799.68 is: 221,730.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,067.48 : 390,155.76 = 147,799.68 : x
  2. Step 2: Convert to fraction form
    260,067.48/390,155.76 = 147,799.68/x
  3. Step 3: Cross multiply
    260,067.48x = 390,155.76 × 147,799.68
  4. Step 4: Simplify right side
    260,067.48x = 57,664,896,478.16
  5. Step 5: Solve for x
    x = 57,664,896,478.16/260,067.48
  6. Step 6: Final answer
    x = 221,730.52

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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.