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Finding the Fourth Proportional to 258,429.60, 386,866.80 and 227,325.60

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Solution

The fourth proportional to 258,429.60, 386,866.80 and 227,325.60 is: 340,304.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,429.60 : 386,866.80 = 227,325.60 : x
  2. Step 2: Convert to fraction form
    258,429.60/386,866.80 = 227,325.60/x
  3. Step 3: Cross multiply
    258,429.60x = 386,866.80 × 227,325.60
  4. Step 4: Simplify right side
    258,429.60x = 87,944,727,430.08
  5. Step 5: Solve for x
    x = 87,944,727,430.08/258,429.60
  6. Step 6: Final answer
    x = 340,304.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.