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Finding the Fourth Proportional to 318,285.16, 477,486.68 and 105,067.92

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Solution

The fourth proportional to 318,285.16, 477,486.68 and 105,067.92 is: 157,621.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,285.16 : 477,486.68 = 105,067.92 : x
  2. Step 2: Convert to fraction form
    318,285.16/477,486.68 = 105,067.92/x
  3. Step 3: Cross multiply
    318,285.16x = 477,486.68 × 105,067.92
  4. Step 4: Simplify right side
    318,285.16x = 50,168,533,923.34
  5. Step 5: Solve for x
    x = 50,168,533,923.34/318,285.16
  6. Step 6: Final answer
    x = 157,621.34

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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.