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Finding the Fourth Proportional to 558,412.80, 837,619.20 and 221,533.80

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Solution

The fourth proportional to 558,412.80, 837,619.20 and 221,533.80 is: 332,300.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,412.80 : 837,619.20 = 221,533.80 : x
  2. Step 2: Convert to fraction form
    558,412.80/837,619.20 = 221,533.80/x
  3. Step 3: Cross multiply
    558,412.80x = 837,619.20 × 221,533.80
  4. Step 4: Simplify right side
    558,412.80x = 185,560,964,328.96
  5. Step 5: Solve for x
    x = 185,560,964,328.96/558,412.80
  6. Step 6: Final answer
    x = 332,300.70

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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.