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Finding the Fourth Proportional to 486,921.40, 730,600.80 and 220,544.80

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Solution

The fourth proportional to 486,921.40, 730,600.80 and 220,544.80 is: 330,916.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,921.40 : 730,600.80 = 220,544.80 : x
  2. Step 2: Convert to fraction form
    486,921.40/730,600.80 = 220,544.80/x
  3. Step 3: Cross multiply
    486,921.40x = 730,600.80 × 220,544.80
  4. Step 4: Simplify right side
    486,921.40x = 161,130,207,315.84
  5. Step 5: Solve for x
    x = 161,130,207,315.84/486,921.40
  6. Step 6: Final answer
    x = 330,916.26

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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.