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Finding the Fourth Proportional to 310,625.60, 465,938.40 and 89,009.60

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Solution

The fourth proportional to 310,625.60, 465,938.40 and 89,009.60 is: 133,514.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,625.60 : 465,938.40 = 89,009.60 : x
  2. Step 2: Convert to fraction form
    310,625.60/465,938.40 = 89,009.60/x
  3. Step 3: Cross multiply
    310,625.60x = 465,938.40 × 89,009.60
  4. Step 4: Simplify right side
    310,625.60x = 41,472,990,608.64
  5. Step 5: Solve for x
    x = 41,472,990,608.64/310,625.60
  6. Step 6: Final answer
    x = 133,514.40

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Similar ratio
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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.