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Finding the Fourth Proportional to 489,164.60, 733,746.90 and 355,320.20

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Solution

The fourth proportional to 489,164.60, 733,746.90 and 355,320.20 is: 532,980.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,164.60 : 733,746.90 = 355,320.20 : x
  2. Step 2: Convert to fraction form
    489,164.60/733,746.90 = 355,320.20/x
  3. Step 3: Cross multiply
    489,164.60x = 733,746.90 × 355,320.20
  4. Step 4: Simplify right side
    489,164.60x = 260,715,095,257.38
  5. Step 5: Solve for x
    x = 260,715,095,257.38/489,164.60
  6. Step 6: Final answer
    x = 532,980.30

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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.