Home / 403,526.80-605,290.20-137,587.60

Finding the Fourth Proportional to 403,526.80, 605,290.20 and 137,587.60

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Solution

The fourth proportional to 403,526.80, 605,290.20 and 137,587.60 is: 206,381.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,526.80 : 605,290.20 = 137,587.60 : x
  2. Step 2: Convert to fraction form
    403,526.80/605,290.20 = 137,587.60/x
  3. Step 3: Cross multiply
    403,526.80x = 605,290.20 × 137,587.60
  4. Step 4: Simplify right side
    403,526.80x = 83,280,425,921.52
  5. Step 5: Solve for x
    x = 83,280,425,921.52/403,526.80
  6. Step 6: Final answer
    x = 206,381.40

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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.