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Finding the Fourth Proportional to 453,498.40, 680,247.60 and 256,890.40

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Solution

The fourth proportional to 453,498.40, 680,247.60 and 256,890.40 is: 385,335.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,498.40 : 680,247.60 = 256,890.40 : x
  2. Step 2: Convert to fraction form
    453,498.40/680,247.60 = 256,890.40/x
  3. Step 3: Cross multiply
    453,498.40x = 680,247.60 × 256,890.40
  4. Step 4: Simplify right side
    453,498.40x = 174,749,078,063.04
  5. Step 5: Solve for x
    x = 174,749,078,063.04/453,498.40
  6. Step 6: Final answer
    x = 385,335.60

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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.