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Finding the Fourth Proportional to 324,340.10, 486,510.15 and 212,365.70

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Solution

The fourth proportional to 324,340.10, 486,510.15 and 212,365.70 is: 318,548.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,340.10 : 486,510.15 = 212,365.70 : x
  2. Step 2: Convert to fraction form
    324,340.10/486,510.15 = 212,365.70/x
  3. Step 3: Cross multiply
    324,340.10x = 486,510.15 × 212,365.70
  4. Step 4: Simplify right side
    324,340.10x = 103,318,068,561.86
  5. Step 5: Solve for x
    x = 103,318,068,561.86/324,340.10
  6. Step 6: Final answer
    x = 318,548.55

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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.