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Finding the Fourth Proportional to 453,201.40, 679,802.10 and 217,005.40

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Solution

The fourth proportional to 453,201.40, 679,802.10 and 217,005.40 is: 325,508.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,201.40 : 679,802.10 = 217,005.40 : x
  2. Step 2: Convert to fraction form
    453,201.40/679,802.10 = 217,005.40/x
  3. Step 3: Cross multiply
    453,201.40x = 679,802.10 × 217,005.40
  4. Step 4: Simplify right side
    453,201.40x = 147,520,726,631.34
  5. Step 5: Solve for x
    x = 147,520,726,631.34/453,201.40
  6. Step 6: Final answer
    x = 325,508.10

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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.