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Finding the Fourth Proportional to 485,672.40, 729,164.70 and 308,525.40

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Solution

The fourth proportional to 485,672.40, 729,164.70 and 308,525.40 is: 463,204.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,672.40 : 729,164.70 = 308,525.40 : x
  2. Step 2: Convert to fraction form
    485,672.40/729,164.70 = 308,525.40/x
  3. Step 3: Cross multiply
    485,672.40x = 729,164.70 × 308,525.40
  4. Step 4: Simplify right side
    485,672.40x = 224,965,830,733.38
  5. Step 5: Solve for x
    x = 224,965,830,733.38/485,672.40
  6. Step 6: Final answer
    x = 463,204.89

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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.