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Finding the Fourth Proportional to 453,313.70, 679,970.55 and 137,729.60

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Solution

The fourth proportional to 453,313.70, 679,970.55 and 137,729.60 is: 206,594.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,313.70 : 679,970.55 = 137,729.60 : x
  2. Step 2: Convert to fraction form
    453,313.70/679,970.55 = 137,729.60/x
  3. Step 3: Cross multiply
    453,313.70x = 679,970.55 × 137,729.60
  4. Step 4: Simplify right side
    453,313.70x = 93,652,071,863.28
  5. Step 5: Solve for x
    x = 93,652,071,863.28/453,313.70
  6. Step 6: Final answer
    x = 206,594.40

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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.