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Finding the Fourth Proportional to 260,382.64, 359,330.64 and 152,987.20

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Solution

The fourth proportional to 260,382.64, 359,330.64 and 152,987.20 is: 211,123.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,382.64 : 359,330.64 = 152,987.20 : x
  2. Step 2: Convert to fraction form
    260,382.64/359,330.64 = 152,987.20/x
  3. Step 3: Cross multiply
    260,382.64x = 359,330.64 × 152,987.20
  4. Step 4: Simplify right side
    260,382.64x = 54,972,988,487.81
  5. Step 5: Solve for x
    x = 54,972,988,487.81/260,382.64
  6. Step 6: Final answer
    x = 211,123.86

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1.5x scale

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.