Home / 318,650.14-478,047.21-105,417.55

Finding the Fourth Proportional to 318,650.14, 478,047.21 and 105,417.55

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Solution

The fourth proportional to 318,650.14, 478,047.21 and 105,417.55 is: 158,150.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,650.14 : 478,047.21 = 105,417.55 : x
  2. Step 2: Convert to fraction form
    318,650.14/478,047.21 = 105,417.55/x
  3. Step 3: Cross multiply
    318,650.14x = 478,047.21 × 105,417.55
  4. Step 4: Simplify right side
    318,650.14x = 50,394,563,272.30
  5. Step 5: Solve for x
    x = 50,394,563,272.30/318,650.14
  6. Step 6: Final answer
    x = 158,150.14

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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.