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Finding the Fourth Proportional to 245,418.85, 338,564.30 and 143,448.63

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Solution

The fourth proportional to 245,418.85, 338,564.30 and 143,448.63 is: 197,892.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,418.85 : 338,564.30 = 143,448.63 : x
  2. Step 2: Convert to fraction form
    245,418.85/338,564.30 = 143,448.63/x
  3. Step 3: Cross multiply
    245,418.85x = 338,564.30 × 143,448.63
  4. Step 4: Simplify right side
    245,418.85x = 48,566,585,001.91
  5. Step 5: Solve for x
    x = 48,566,585,001.91/245,418.85
  6. Step 6: Final answer
    x = 197,892.64

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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.