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Finding the Fourth Proportional to 508,085.39, 701,158.84 and 278,644.30

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Solution

The fourth proportional to 508,085.39, 701,158.84 and 278,644.30 is: 384,529.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,085.39 : 701,158.84 = 278,644.30 : x
  2. Step 2: Convert to fraction form
    508,085.39/701,158.84 = 278,644.30/x
  3. Step 3: Cross multiply
    508,085.39x = 701,158.84 × 278,644.30
  4. Step 4: Simplify right side
    508,085.39x = 195,373,911,711.10
  5. Step 5: Solve for x
    x = 195,373,911,711.10/508,085.39
  6. Step 6: Final answer
    x = 384,529.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.