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Finding the Fourth Proportional to 318,486.03, 477,581.42 and 118,752.79

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Solution

The fourth proportional to 318,486.03, 477,581.42 and 118,752.79 is: 178,074.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,486.03 : 477,581.42 = 118,752.79 : x
  2. Step 2: Convert to fraction form
    318,486.03/477,581.42 = 118,752.79/x
  3. Step 3: Cross multiply
    318,486.03x = 477,581.42 × 118,752.79
  4. Step 4: Simplify right side
    318,486.03x = 56,714,126,077.16
  5. Step 5: Solve for x
    x = 56,714,126,077.16/318,486.03
  6. Step 6: Final answer
    x = 178,074.14

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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.