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Finding the Fourth Proportional to 318,007.48, 477,006.36 and 81,348.16

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Solution

The fourth proportional to 318,007.48, 477,006.36 and 81,348.16 is: 122,021.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,007.48 : 477,006.36 = 81,348.16 : x
  2. Step 2: Convert to fraction form
    318,007.48/477,006.36 = 81,348.16/x
  3. Step 3: Cross multiply
    318,007.48x = 477,006.36 × 81,348.16
  4. Step 4: Simplify right side
    318,007.48x = 38,803,589,694.30
  5. Step 5: Solve for x
    x = 38,803,589,694.30/318,007.48
  6. Step 6: Final answer
    x = 122,021.00

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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.