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Finding the Fourth Proportional to 360,023.80, 539,690.10 and 280,017.40

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Solution

The fourth proportional to 360,023.80, 539,690.10 and 280,017.40 is: 419,757.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    360,023.80 : 539,690.10 = 280,017.40 : x
  2. Step 2: Convert to fraction form
    360,023.80/539,690.10 = 280,017.40/x
  3. Step 3: Cross multiply
    360,023.80x = 539,690.10 × 280,017.40
  4. Step 4: Simplify right side
    360,023.80x = 151,122,618,607.74
  5. Step 5: Solve for x
    x = 151,122,618,607.74/360,023.80
  6. Step 6: Final answer
    x = 419,757.30

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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.