Home / 210,376.20-315,214.38-147,915.72

Finding the Fourth Proportional to 210,376.20, 315,214.38 and 147,915.72

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Solution

The fourth proportional to 210,376.20, 315,214.38 and 147,915.72 is: 221,627.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,376.20 : 315,214.38 = 147,915.72 : x
  2. Step 2: Convert to fraction form
    210,376.20/315,214.38 = 147,915.72/x
  3. Step 3: Cross multiply
    210,376.20x = 315,214.38 × 147,915.72
  4. Step 4: Simplify right side
    210,376.20x = 46,625,161,972.05
  5. Step 5: Solve for x
    x = 46,625,161,972.05/210,376.20
  6. Step 6: Final answer
    x = 221,627.55

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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.