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Finding the Fourth Proportional to 432,017.20, 648,220.20 and 207,290.80

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Solution

The fourth proportional to 432,017.20, 648,220.20 and 207,290.80 is: 311,029.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    432,017.20 : 648,220.20 = 207,290.80 : x
  2. Step 2: Convert to fraction form
    432,017.20/648,220.20 = 207,290.80/x
  3. Step 3: Cross multiply
    432,017.20x = 648,220.20 × 207,290.80
  4. Step 4: Simplify right side
    432,017.20x = 134,370,083,834.16
  5. Step 5: Solve for x
    x = 134,370,083,834.16/432,017.20
  6. Step 6: Final answer
    x = 311,029.48

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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.