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Finding the Fourth Proportional to 484,178.61, 668,247.57 and 280,194.39

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Solution

The fourth proportional to 484,178.61, 668,247.57 and 280,194.39 is: 386,715.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,178.61 : 668,247.57 = 280,194.39 : x
  2. Step 2: Convert to fraction form
    484,178.61/668,247.57 = 280,194.39/x
  3. Step 3: Cross multiply
    484,178.61x = 668,247.57 × 280,194.39
  4. Step 4: Simplify right side
    484,178.61x = 187,239,220,245.13
  5. Step 5: Solve for x
    x = 187,239,220,245.13/484,178.61
  6. Step 6: Final answer
    x = 386,715.18

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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.