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Finding the Fourth Proportional to 318,209.61, 477,522.17 and 118,689.60

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Solution

The fourth proportional to 318,209.61, 477,522.17 and 118,689.60 is: 178,111.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,209.61 : 477,522.17 = 118,689.60 : x
  2. Step 2: Convert to fraction form
    318,209.61/477,522.17 = 118,689.60/x
  3. Step 3: Cross multiply
    318,209.61x = 477,522.17 × 118,689.60
  4. Step 4: Simplify right side
    318,209.61x = 56,676,914,754.98
  5. Step 5: Solve for x
    x = 56,676,914,754.98/318,209.61
  6. Step 6: Final answer
    x = 178,111.89

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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.