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Finding the Fourth Proportional to 328,084.30, 492,709.65 and 239,437.90

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Solution

The fourth proportional to 328,084.30, 492,709.65 and 239,437.90 is: 359,582.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,084.30 : 492,709.65 = 239,437.90 : x
  2. Step 2: Convert to fraction form
    328,084.30/492,709.65 = 239,437.90/x
  3. Step 3: Cross multiply
    328,084.30x = 492,709.65 × 239,437.90
  4. Step 4: Simplify right side
    328,084.30x = 117,973,363,905.74
  5. Step 5: Solve for x
    x = 117,973,363,905.74/328,084.30
  6. Step 6: Final answer
    x = 359,582.47

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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.