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Finding the Fourth Proportional to 605,323.20, 907,984.80 and 162,091.20

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Solution

The fourth proportional to 605,323.20, 907,984.80 and 162,091.20 is: 243,136.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,323.20 : 907,984.80 = 162,091.20 : x
  2. Step 2: Convert to fraction form
    605,323.20/907,984.80 = 162,091.20/x
  3. Step 3: Cross multiply
    605,323.20x = 907,984.80 × 162,091.20
  4. Step 4: Simplify right side
    605,323.20x = 147,176,345,813.76
  5. Step 5: Solve for x
    x = 147,176,345,813.76/605,323.20
  6. Step 6: Final answer
    x = 243,136.80

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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.