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Finding the Fourth Proportional to 426,551.57, 640,220.96 and 216,337.13

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Solution

The fourth proportional to 426,551.57, 640,220.96 and 216,337.13 is: 324,705.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,551.57 : 640,220.96 = 216,337.13 : x
  2. Step 2: Convert to fraction form
    426,551.57/640,220.96 = 216,337.13/x
  3. Step 3: Cross multiply
    426,551.57x = 640,220.96 × 216,337.13
  4. Step 4: Simplify right side
    426,551.57x = 138,503,565,052.25
  5. Step 5: Solve for x
    x = 138,503,565,052.25/426,551.57
  6. Step 6: Final answer
    x = 324,705.32

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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.