Home / 245,281.14-338,428.85-143,248.68

Finding the Fourth Proportional to 245,281.14, 338,428.85 and 143,248.68

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Solution

The fourth proportional to 245,281.14, 338,428.85 and 143,248.68 is: 197,648.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,281.14 : 338,428.85 = 143,248.68 : x
  2. Step 2: Convert to fraction form
    245,281.14/338,428.85 = 143,248.68/x
  3. Step 3: Cross multiply
    245,281.14x = 338,428.85 × 143,248.68
  4. Step 4: Simplify right side
    245,281.14x = 48,479,486,036.42
  5. Step 5: Solve for x
    x = 48,479,486,036.42/245,281.14
  6. Step 6: Final answer
    x = 197,648.65

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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.