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Finding the Fourth Proportional to 453,323.72, 679,911.42 and 133,400.72

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Solution

The fourth proportional to 453,323.72, 679,911.42 and 133,400.72 is: 200,079.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,323.72 : 679,911.42 = 133,400.72 : x
  2. Step 2: Convert to fraction form
    453,323.72/679,911.42 = 133,400.72/x
  3. Step 3: Cross multiply
    453,323.72x = 679,911.42 × 133,400.72
  4. Step 4: Simplify right side
    453,323.72x = 90,700,672,964.22
  5. Step 5: Solve for x
    x = 90,700,672,964.22/453,323.72
  6. Step 6: Final answer
    x = 200,079.26

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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.