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Finding the Fourth Proportional to 255,025.80, 381,663.90 and 234,030.60

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Solution

The fourth proportional to 255,025.80, 381,663.90 and 234,030.60 is: 350,243.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,025.80 : 381,663.90 = 234,030.60 : x
  2. Step 2: Convert to fraction form
    255,025.80/381,663.90 = 234,030.60/x
  3. Step 3: Cross multiply
    255,025.80x = 381,663.90 × 234,030.60
  4. Step 4: Simplify right side
    255,025.80x = 89,321,031,515.34
  5. Step 5: Solve for x
    x = 89,321,031,515.34/255,025.80
  6. Step 6: Final answer
    x = 350,243.12

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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.