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Finding the Fourth Proportional to 280,593.59, 420,952.58 and 80,898.40

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Solution

The fourth proportional to 280,593.59, 420,952.58 and 80,898.40 is: 121,365.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,593.59 : 420,952.58 = 80,898.40 : x
  2. Step 2: Convert to fraction form
    280,593.59/420,952.58 = 80,898.40/x
  3. Step 3: Cross multiply
    280,593.59x = 420,952.58 × 80,898.40
  4. Step 4: Simplify right side
    280,593.59x = 34,054,389,347.74
  5. Step 5: Solve for x
    x = 34,054,389,347.74/280,593.59
  6. Step 6: Final answer
    x = 121,365.53

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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.