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Finding the Fourth Proportional to 239,801.65, 359,636.85 and 90,030.42

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Solution

The fourth proportional to 239,801.65, 359,636.85 and 90,030.42 is: 135,020.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,801.65 : 359,636.85 = 90,030.42 : x
  2. Step 2: Convert to fraction form
    239,801.65/359,636.85 = 90,030.42/x
  3. Step 3: Cross multiply
    239,801.65x = 359,636.85 × 90,030.42
  4. Step 4: Simplify right side
    239,801.65x = 32,378,256,652.98
  5. Step 5: Solve for x
    x = 32,378,256,652.98/239,801.65
  6. Step 6: Final answer
    x = 135,020.99

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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.