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Finding the Fourth Proportional to 280,010.20, 420,015.30 and 246,767.80

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Solution

The fourth proportional to 280,010.20, 420,015.30 and 246,767.80 is: 370,151.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,010.20 : 420,015.30 = 246,767.80 : x
  2. Step 2: Convert to fraction form
    280,010.20/420,015.30 = 246,767.80/x
  3. Step 3: Cross multiply
    280,010.20x = 420,015.30 × 246,767.80
  4. Step 4: Simplify right side
    280,010.20x = 103,646,251,547.34
  5. Step 5: Solve for x
    x = 103,646,251,547.34/280,010.20
  6. Step 6: Final answer
    x = 370,151.70

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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.