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Finding the Fourth Proportional to 288,409.60, 432,615.38 and 88,728.64

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Solution

The fourth proportional to 288,409.60, 432,615.38 and 88,728.64 is: 133,093.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,409.60 : 432,615.38 = 88,728.64 : x
  2. Step 2: Convert to fraction form
    288,409.60/432,615.38 = 88,728.64/x
  3. Step 3: Cross multiply
    288,409.60x = 432,615.38 × 88,728.64
  4. Step 4: Simplify right side
    288,409.60x = 38,385,374,310.48
  5. Step 5: Solve for x
    x = 38,385,374,310.48/288,409.60
  6. Step 6: Final answer
    x = 133,093.26

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1.5x scale

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.