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Finding the Fourth Proportional to 453,143.40, 679,268.70 and 253,559.40

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Solution

The fourth proportional to 453,143.40, 679,268.70 and 253,559.40 is: 380,089.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,143.40 : 679,268.70 = 253,559.40 : x
  2. Step 2: Convert to fraction form
    453,143.40/679,268.70 = 253,559.40/x
  3. Step 3: Cross multiply
    453,143.40x = 679,268.70 × 253,559.40
  4. Step 4: Simplify right side
    453,143.40x = 172,234,964,010.78
  5. Step 5: Solve for x
    x = 172,234,964,010.78/453,143.40
  6. Step 6: Final answer
    x = 380,089.31

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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.