Home / 238,402.20-357,574.92-78,438.44

Finding the Fourth Proportional to 238,402.20, 357,574.92 and 78,438.44

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Solution

The fourth proportional to 238,402.20, 357,574.92 and 78,438.44 is: 117,648.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,402.20 : 357,574.92 = 78,438.44 : x
  2. Step 2: Convert to fraction form
    238,402.20/357,574.92 = 78,438.44/x
  3. Step 3: Cross multiply
    238,402.20x = 357,574.92 × 78,438.44
  4. Step 4: Simplify right side
    238,402.20x = 28,047,618,907.92
  5. Step 5: Solve for x
    x = 28,047,618,907.92/238,402.20
  6. Step 6: Final answer
    x = 117,648.32

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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.