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Finding the Fourth Proportional to 280,044.68, 421,580.53 and 255,244.10

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Solution

The fourth proportional to 280,044.68, 421,580.53 and 255,244.10 is: 384,245.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,044.68 : 421,580.53 = 255,244.10 : x
  2. Step 2: Convert to fraction form
    280,044.68/421,580.53 = 255,244.10/x
  3. Step 3: Cross multiply
    280,044.68x = 421,580.53 × 255,244.10
  4. Step 4: Simplify right side
    280,044.68x = 107,605,941,168.53
  5. Step 5: Solve for x
    x = 107,605,941,168.53/280,044.68
  6. Step 6: Final answer
    x = 384,245.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.