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Finding the Fourth Proportional to 318,486.13, 477,803.01 and 108,124.06

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Solution

The fourth proportional to 318,486.13, 477,803.01 and 108,124.06 is: 162,211.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,486.13 : 477,803.01 = 108,124.06 : x
  2. Step 2: Convert to fraction form
    318,486.13/477,803.01 = 108,124.06/x
  3. Step 3: Cross multiply
    318,486.13x = 477,803.01 × 108,124.06
  4. Step 4: Simplify right side
    318,486.13x = 51,662,000,780.80
  5. Step 5: Solve for x
    x = 51,662,000,780.80/318,486.13
  6. Step 6: Final answer
    x = 162,211.15

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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.