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Finding the Fourth Proportional to 260,988.91, 360,158.56 and 153,565.90

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Solution

The fourth proportional to 260,988.91, 360,158.56 and 153,565.90 is: 211,917.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,988.91 : 360,158.56 = 153,565.90 : x
  2. Step 2: Convert to fraction form
    260,988.91/360,158.56 = 153,565.90/x
  3. Step 3: Cross multiply
    260,988.91x = 360,158.56 × 153,565.90
  4. Step 4: Simplify right side
    260,988.91x = 55,308,073,409.10
  5. Step 5: Solve for x
    x = 55,308,073,409.10/260,988.91
  6. Step 6: Final answer
    x = 211,917.33

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.