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Finding the Fourth Proportional to 230,228.64, 345,386.70 and 80,511.48

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Solution

The fourth proportional to 230,228.64, 345,386.70 and 80,511.48 is: 120,782.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,228.64 : 345,386.70 = 80,511.48 : x
  2. Step 2: Convert to fraction form
    230,228.64/345,386.70 = 80,511.48/x
  3. Step 3: Cross multiply
    230,228.64x = 345,386.70 × 80,511.48
  4. Step 4: Simplify right side
    230,228.64x = 27,807,594,389.32
  5. Step 5: Solve for x
    x = 27,807,594,389.32/230,228.64
  6. Step 6: Final answer
    x = 120,782.52

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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.