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Finding the Fourth Proportional to 468,647.40, 646,725.42 and 253,785.72

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Solution

The fourth proportional to 468,647.40, 646,725.42 and 253,785.72 is: 350,219.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    468,647.40 : 646,725.42 = 253,785.72 : x
  2. Step 2: Convert to fraction form
    468,647.40/646,725.42 = 253,785.72/x
  3. Step 3: Cross multiply
    468,647.40x = 646,725.42 × 253,785.72
  4. Step 4: Simplify right side
    468,647.40x = 164,129,676,357.00
  5. Step 5: Solve for x
    x = 164,129,676,357.00/468,647.40
  6. Step 6: Final answer
    x = 350,219.97

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.