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Finding the Fourth Proportional to 917,234.24, 1,375,320 and 355,611.20

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Solution

The fourth proportional to 917,234.24, 1,375,320 and 355,611.20 is: 533,210.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,234.24 : 1,375,320 = 355,611.20 : x
  2. Step 2: Convert to fraction form
    917,234.24/1,375,320 = 355,611.20/x
  3. Step 3: Cross multiply
    917,234.24x = 1,375,320 × 355,611.20
  4. Step 4: Simplify right side
    917,234.24x = 489,079,195,584
  5. Step 5: Solve for x
    x = 489,079,195,584/917,234.24
  6. Step 6: Final answer
    x = 533,210.79

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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.