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Finding the Fourth Proportional to 318,009.48, 477,009.36 and 81,350.16

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Solution

The fourth proportional to 318,009.48, 477,009.36 and 81,350.16 is: 122,024.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,009.48 : 477,009.36 = 81,350.16 : x
  2. Step 2: Convert to fraction form
    318,009.48/477,009.36 = 81,350.16/x
  3. Step 3: Cross multiply
    318,009.48x = 477,009.36 × 81,350.16
  4. Step 4: Simplify right side
    318,009.48x = 38,804,787,757.50
  5. Step 5: Solve for x
    x = 38,804,787,757.50/318,009.48
  6. Step 6: Final answer
    x = 122,024.00

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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.