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Finding the Fourth Proportional to 477,938.70, 716,908.05 and 145,514.70

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Solution

The fourth proportional to 477,938.70, 716,908.05 and 145,514.70 is: 218,272.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    477,938.70 : 716,908.05 = 145,514.70 : x
  2. Step 2: Convert to fraction form
    477,938.70/716,908.05 = 145,514.70/x
  3. Step 3: Cross multiply
    477,938.70x = 716,908.05 × 145,514.70
  4. Step 4: Simplify right side
    477,938.70x = 104,320,659,823.34
  5. Step 5: Solve for x
    x = 104,320,659,823.34/477,938.70
  6. Step 6: Final answer
    x = 218,272.05

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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.