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Finding the Fourth Proportional to 318,449.93, 477,033.77 and 147,430.58

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Solution

The fourth proportional to 318,449.93, 477,033.77 and 147,430.58 is: 220,849.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,449.93 : 477,033.77 = 147,430.58 : x
  2. Step 2: Convert to fraction form
    318,449.93/477,033.77 = 147,430.58/x
  3. Step 3: Cross multiply
    318,449.93x = 477,033.77 × 147,430.58
  4. Step 4: Simplify right side
    318,449.93x = 70,329,362,268.36
  5. Step 5: Solve for x
    x = 70,329,362,268.36/318,449.93
  6. Step 6: Final answer
    x = 220,849.05

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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.