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Finding the Fourth Proportional to 424,139.40, 585,320.40 and 233,152.80

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Solution

The fourth proportional to 424,139.40, 585,320.40 and 233,152.80 is: 321,755.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,139.40 : 585,320.40 = 233,152.80 : x
  2. Step 2: Convert to fraction form
    424,139.40/585,320.40 = 233,152.80/x
  3. Step 3: Cross multiply
    424,139.40x = 585,320.40 × 233,152.80
  4. Step 4: Simplify right side
    424,139.40x = 136,469,090,157.12
  5. Step 5: Solve for x
    x = 136,469,090,157.12/424,139.40
  6. Step 6: Final answer
    x = 321,755.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.