Home / 318,538.90-477,475.15-118,772.38

Finding the Fourth Proportional to 318,538.90, 477,475.15 and 118,772.38

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Solution

The fourth proportional to 318,538.90, 477,475.15 and 118,772.38 is: 178,034.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,538.90 : 477,475.15 = 118,772.38 : x
  2. Step 2: Convert to fraction form
    318,538.90/477,475.15 = 118,772.38/x
  3. Step 3: Cross multiply
    318,538.90x = 477,475.15 × 118,772.38
  4. Step 4: Simplify right side
    318,538.90x = 56,710,859,956.36
  5. Step 5: Solve for x
    x = 56,710,859,956.36/318,538.90
  6. Step 6: Final answer
    x = 178,034.33

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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.