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Finding the Fourth Proportional to 440,266.80, 661,091.40 and 253,642.80

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Solution

The fourth proportional to 440,266.80, 661,091.40 and 253,642.80 is: 380,862.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,266.80 : 661,091.40 = 253,642.80 : x
  2. Step 2: Convert to fraction form
    440,266.80/661,091.40 = 253,642.80/x
  3. Step 3: Cross multiply
    440,266.80x = 661,091.40 × 253,642.80
  4. Step 4: Simplify right side
    440,266.80x = 167,681,073,751.92
  5. Step 5: Solve for x
    x = 167,681,073,751.92/440,266.80
  6. Step 6: Final answer
    x = 380,862.41

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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.