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Finding the Fourth Proportional to 318,353.92, 477,534.72 and 107,987.20

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Solution

The fourth proportional to 318,353.92, 477,534.72 and 107,987.20 is: 161,982.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,353.92 : 477,534.72 = 107,987.20 : x
  2. Step 2: Convert to fraction form
    318,353.92/477,534.72 = 107,987.20/x
  3. Step 3: Cross multiply
    318,353.92x = 477,534.72 × 107,987.20
  4. Step 4: Simplify right side
    318,353.92x = 51,567,637,315.58
  5. Step 5: Solve for x
    x = 51,567,637,315.58/318,353.92
  6. Step 6: Final answer
    x = 161,982.10

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1.5x scale

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.