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Finding the Fourth Proportional to 370,062.72, 555,128.92 and 103,822.20

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Solution

The fourth proportional to 370,062.72, 555,128.92 and 103,822.20 is: 155,743.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,062.72 : 555,128.92 = 103,822.20 : x
  2. Step 2: Convert to fraction form
    370,062.72/555,128.92 = 103,822.20/x
  3. Step 3: Cross multiply
    370,062.72x = 555,128.92 × 103,822.20
  4. Step 4: Simplify right side
    370,062.72x = 57,634,705,758.02
  5. Step 5: Solve for x
    x = 57,634,705,758.02/370,062.72
  6. Step 6: Final answer
    x = 155,743.07

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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.