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Finding the Fourth Proportional to 259,955.60, 358,732.12 and 145,235.11

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Solution

The fourth proportional to 259,955.60, 358,732.12 and 145,235.11 is: 200,420.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,955.60 : 358,732.12 = 145,235.11 : x
  2. Step 2: Convert to fraction form
    259,955.60/358,732.12 = 145,235.11/x
  3. Step 3: Cross multiply
    259,955.60x = 358,732.12 × 145,235.11
  4. Step 4: Simplify right side
    259,955.60x = 52,100,498,347.65
  5. Step 5: Solve for x
    x = 52,100,498,347.65/259,955.60
  6. Step 6: Final answer
    x = 200,420.76

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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.