Home / 318,691.04-478,036.60-105,401.70

Finding the Fourth Proportional to 318,691.04, 478,036.60 and 105,401.70

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Solution

The fourth proportional to 318,691.04, 478,036.60 and 105,401.70 is: 158,102.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,691.04 : 478,036.60 = 105,401.70 : x
  2. Step 2: Convert to fraction form
    318,691.04/478,036.60 = 105,401.70/x
  3. Step 3: Cross multiply
    318,691.04x = 478,036.60 × 105,401.70
  4. Step 4: Simplify right side
    318,691.04x = 50,385,870,302.22
  5. Step 5: Solve for x
    x = 50,385,870,302.22/318,691.04
  6. Step 6: Final answer
    x = 158,102.56

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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.