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Finding the Fourth Proportional to 558,710.80, 838,066.20 and 221,831.80

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Solution

The fourth proportional to 558,710.80, 838,066.20 and 221,831.80 is: 332,747.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,710.80 : 838,066.20 = 221,831.80 : x
  2. Step 2: Convert to fraction form
    558,710.80/838,066.20 = 221,831.80/x
  3. Step 3: Cross multiply
    558,710.80x = 838,066.20 × 221,831.80
  4. Step 4: Simplify right side
    558,710.80x = 185,909,733,665.16
  5. Step 5: Solve for x
    x = 185,909,733,665.16/558,710.80
  6. Step 6: Final answer
    x = 332,747.70

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Similar ratio
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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.