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Finding the Fourth Proportional to 558,427.80, 837,641.70 and 221,548.80

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Solution

The fourth proportional to 558,427.80, 837,641.70 and 221,548.80 is: 332,323.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,427.80 : 837,641.70 = 221,548.80 : x
  2. Step 2: Convert to fraction form
    558,427.80/837,641.70 = 221,548.80/x
  3. Step 3: Cross multiply
    558,427.80x = 837,641.70 × 221,548.80
  4. Step 4: Simplify right side
    558,427.80x = 185,578,513,464.96
  5. Step 5: Solve for x
    x = 185,578,513,464.96/558,427.80
  6. Step 6: Final answer
    x = 332,323.20

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Double scale
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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.