Home / 307,657.12-424,402.32-212,211.04

Finding the Fourth Proportional to 307,657.12, 424,402.32 and 212,211.04

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Solution

The fourth proportional to 307,657.12, 424,402.32 and 212,211.04 is: 292,737.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,657.12 : 424,402.32 = 212,211.04 : x
  2. Step 2: Convert to fraction form
    307,657.12/424,402.32 = 212,211.04/x
  3. Step 3: Cross multiply
    307,657.12x = 424,402.32 × 212,211.04
  4. Step 4: Simplify right side
    307,657.12x = 90,062,857,705.61
  5. Step 5: Solve for x
    x = 90,062,857,705.61/307,657.12
  6. Step 6: Final answer
    x = 292,737.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.