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Finding the Fourth Proportional to 282,325.76, 389,610.20 and 155,009.52

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Solution

The fourth proportional to 282,325.76, 389,610.20 and 155,009.52 is: 213,913.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,325.76 : 389,610.20 = 155,009.52 : x
  2. Step 2: Convert to fraction form
    282,325.76/389,610.20 = 155,009.52/x
  3. Step 3: Cross multiply
    282,325.76x = 389,610.20 × 155,009.52
  4. Step 4: Simplify right side
    282,325.76x = 60,393,290,089.10
  5. Step 5: Solve for x
    x = 60,393,290,089.10/282,325.76
  6. Step 6: Final answer
    x = 213,913.50

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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.