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Finding the Fourth Proportional to 324,350.40, 486,088.20 and 217,430.40

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Solution

The fourth proportional to 324,350.40, 486,088.20 and 217,430.40 is: 325,852.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,350.40 : 486,088.20 = 217,430.40 : x
  2. Step 2: Convert to fraction form
    324,350.40/486,088.20 = 217,430.40/x
  3. Step 3: Cross multiply
    324,350.40x = 486,088.20 × 217,430.40
  4. Step 4: Simplify right side
    324,350.40x = 105,690,351,761.28
  5. Step 5: Solve for x
    x = 105,690,351,761.28/324,350.40
  6. Step 6: Final answer
    x = 325,852.39

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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.