Home / 212,970.15-318,908.88-206,663.49

Finding the Fourth Proportional to 212,970.15, 318,908.88 and 206,663.49

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Solution

The fourth proportional to 212,970.15, 318,908.88 and 206,663.49 is: 309,465.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,970.15 : 318,908.88 = 206,663.49 : x
  2. Step 2: Convert to fraction form
    212,970.15/318,908.88 = 206,663.49/x
  3. Step 3: Cross multiply
    212,970.15x = 318,908.88 × 206,663.49
  4. Step 4: Simplify right side
    212,970.15x = 65,906,822,132.79
  5. Step 5: Solve for x
    x = 65,906,822,132.79/212,970.15
  6. Step 6: Final answer
    x = 309,465.07

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1.5x scale

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.