Home / 212,916.96-318,711.15-156,820.41

Finding the Fourth Proportional to 212,916.96, 318,711.15 and 156,820.41

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Solution

The fourth proportional to 212,916.96, 318,711.15 and 156,820.41 is: 234,741.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,916.96 : 318,711.15 = 156,820.41 : x
  2. Step 2: Convert to fraction form
    212,916.96/318,711.15 = 156,820.41/x
  3. Step 3: Cross multiply
    212,916.96x = 318,711.15 × 156,820.41
  4. Step 4: Simplify right side
    212,916.96x = 49,980,413,214.57
  5. Step 5: Solve for x
    x = 49,980,413,214.57/212,916.96
  6. Step 6: Final answer
    x = 234,741.34

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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.