Home / 420,755.28-580,641.78-248,735.25

Finding the Fourth Proportional to 420,755.28, 580,641.78 and 248,735.25

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Solution

The fourth proportional to 420,755.28, 580,641.78 and 248,735.25 is: 343,254.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,755.28 : 580,641.78 = 248,735.25 : x
  2. Step 2: Convert to fraction form
    420,755.28/580,641.78 = 248,735.25/x
  3. Step 3: Cross multiply
    420,755.28x = 580,641.78 × 248,735.25
  4. Step 4: Simplify right side
    420,755.28x = 144,426,078,308.75
  5. Step 5: Solve for x
    x = 144,426,078,308.75/420,755.28
  6. Step 6: Final answer
    x = 343,254.35

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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.