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Finding the Fourth Proportional to 542,557.81, 748,738.74 and 300,850.57

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Solution

The fourth proportional to 542,557.81, 748,738.74 and 300,850.57 is: 415,178.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,557.81 : 748,738.74 = 300,850.57 : x
  2. Step 2: Convert to fraction form
    542,557.81/748,738.74 = 300,850.57/x
  3. Step 3: Cross multiply
    542,557.81x = 748,738.74 × 300,850.57
  4. Step 4: Simplify right side
    542,557.81x = 225,258,476,710.08
  5. Step 5: Solve for x
    x = 225,258,476,710.08/542,557.81
  6. Step 6: Final answer
    x = 415,178.76

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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.