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Finding the Fourth Proportional to 542,669.50, 748,883.91 and 300,989.08

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Solution

The fourth proportional to 542,669.50, 748,883.91 and 300,989.08 is: 415,364.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,669.50 : 748,883.91 = 300,989.08 : x
  2. Step 2: Convert to fraction form
    542,669.50/748,883.91 = 300,989.08/x
  3. Step 3: Cross multiply
    542,669.50x = 748,883.91 × 300,989.08
  4. Step 4: Simplify right side
    542,669.50x = 225,405,879,097.70
  5. Step 5: Solve for x
    x = 225,405,879,097.70/542,669.50
  6. Step 6: Final answer
    x = 415,364.93

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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.