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Finding the Fourth Proportional to 245,417.85, 338,562.92 and 143,447.63

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Solution

The fourth proportional to 245,417.85, 338,562.92 and 143,447.63 is: 197,891.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,417.85 : 338,562.92 = 143,447.63 : x
  2. Step 2: Convert to fraction form
    245,417.85/338,562.92 = 143,447.63/x
  3. Step 3: Cross multiply
    245,417.85x = 338,562.92 × 143,447.63
  4. Step 4: Simplify right side
    245,417.85x = 48,566,047,145.68
  5. Step 5: Solve for x
    x = 48,566,047,145.68/245,417.85
  6. Step 6: Final answer
    x = 197,891.26

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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.