Home / 318,701.16-477,732-148,042.68

Finding the Fourth Proportional to 318,701.16, 477,732 and 148,042.68

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Solution

The fourth proportional to 318,701.16, 477,732 and 148,042.68 is: 221,915.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,701.16 : 477,732 = 148,042.68 : x
  2. Step 2: Convert to fraction form
    318,701.16/477,732 = 148,042.68/x
  3. Step 3: Cross multiply
    318,701.16x = 477,732 × 148,042.68
  4. Step 4: Simplify right side
    318,701.16x = 70,724,725,601.76
  5. Step 5: Solve for x
    x = 70,724,725,601.76/318,701.16
  6. Step 6: Final answer
    x = 221,915.49

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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.