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Finding the Fourth Proportional to 542,549.56, 748,718.76 and 300,835.12

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Solution

The fourth proportional to 542,549.56, 748,718.76 and 300,835.12 is: 415,152.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,549.56 : 748,718.76 = 300,835.12 : x
  2. Step 2: Convert to fraction form
    542,549.56/748,718.76 = 300,835.12/x
  3. Step 3: Cross multiply
    542,549.56x = 748,718.76 × 300,835.12
  4. Step 4: Simplify right side
    542,549.56x = 225,240,898,010.85
  5. Step 5: Solve for x
    x = 225,240,898,010.85/542,549.56
  6. Step 6: Final answer
    x = 415,152.67

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Double scale
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Similar ratio
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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.