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Finding the Fourth Proportional to 230,030.40, 345,061.80 and 130,238.40

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Solution

The fourth proportional to 230,030.40, 345,061.80 and 130,238.40 is: 195,366.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,030.40 : 345,061.80 = 130,238.40 : x
  2. Step 2: Convert to fraction form
    230,030.40/345,061.80 = 130,238.40/x
  3. Step 3: Cross multiply
    230,030.40x = 345,061.80 × 130,238.40
  4. Step 4: Simplify right side
    230,030.40x = 44,940,296,733.12
  5. Step 5: Solve for x
    x = 44,940,296,733.12/230,030.40
  6. Step 6: Final answer
    x = 195,366.77

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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.