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Finding the Fourth Proportional to 453,323.70, 679,985.55 and 137,739.60

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Solution

The fourth proportional to 453,323.70, 679,985.55 and 137,739.60 is: 206,609.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,323.70 : 679,985.55 = 137,739.60 : x
  2. Step 2: Convert to fraction form
    453,323.70/679,985.55 = 137,739.60/x
  3. Step 3: Cross multiply
    453,323.70x = 679,985.55 × 137,739.60
  4. Step 4: Simplify right side
    453,323.70x = 93,660,937,662.78
  5. Step 5: Solve for x
    x = 93,660,937,662.78/453,323.70
  6. Step 6: Final answer
    x = 206,609.40

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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.