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Finding the Fourth Proportional to 245,252.71, 338,437.83 and 143,287.60

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Solution

The fourth proportional to 245,252.71, 338,437.83 and 143,287.60 is: 197,730.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,252.71 : 338,437.83 = 143,287.60 : x
  2. Step 2: Convert to fraction form
    245,252.71/338,437.83 = 143,287.60/x
  3. Step 3: Cross multiply
    245,252.71x = 338,437.83 × 143,287.60
  4. Step 4: Simplify right side
    245,252.71x = 48,493,944,409.91
  5. Step 5: Solve for x
    x = 48,493,944,409.91/245,252.71
  6. Step 6: Final answer
    x = 197,730.51

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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.