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Finding the Fourth Proportional to 458,201.80, 687,302.70 and 245,625.40

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Solution

The fourth proportional to 458,201.80, 687,302.70 and 245,625.40 is: 368,438.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,201.80 : 687,302.70 = 245,625.40 : x
  2. Step 2: Convert to fraction form
    458,201.80/687,302.70 = 245,625.40/x
  3. Step 3: Cross multiply
    458,201.80x = 687,302.70 × 245,625.40
  4. Step 4: Simplify right side
    458,201.80x = 168,819,000,608.58
  5. Step 5: Solve for x
    x = 168,819,000,608.58/458,201.80
  6. Step 6: Final answer
    x = 368,438.10

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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.