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Finding the Fourth Proportional to 542,138.58, 748,167.60 and 300,398.40

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Solution

The fourth proportional to 542,138.58, 748,167.60 and 300,398.40 is: 414,558.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,138.58 : 748,167.60 = 300,398.40 : x
  2. Step 2: Convert to fraction form
    542,138.58/748,167.60 = 300,398.40/x
  3. Step 3: Cross multiply
    542,138.58x = 748,167.60 × 300,398.40
  4. Step 4: Simplify right side
    542,138.58x = 224,748,349,971.84
  5. Step 5: Solve for x
    x = 224,748,349,971.84/542,138.58
  6. Step 6: Final answer
    x = 414,558.86

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1.5x scale

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.