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Finding the Fourth Proportional to 318,332.92, 477,499.94 and 105,112.76

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Solution

The fourth proportional to 318,332.92, 477,499.94 and 105,112.76 is: 157,669.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,332.92 : 477,499.94 = 105,112.76 : x
  2. Step 2: Convert to fraction form
    318,332.92/477,499.94 = 105,112.76/x
  3. Step 3: Cross multiply
    318,332.92x = 477,499.94 × 105,112.76
  4. Step 4: Simplify right side
    318,332.92x = 50,191,336,593.23
  5. Step 5: Solve for x
    x = 50,191,336,593.23/318,332.92
  6. Step 6: Final answer
    x = 157,669.32

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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.