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Finding the Fourth Proportional to 379,929.60, 569,894.40 and 355,046.40

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Solution

The fourth proportional to 379,929.60, 569,894.40 and 355,046.40 is: 532,569.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,929.60 : 569,894.40 = 355,046.40 : x
  2. Step 2: Convert to fraction form
    379,929.60/569,894.40 = 355,046.40/x
  3. Step 3: Cross multiply
    379,929.60x = 569,894.40 × 355,046.40
  4. Step 4: Simplify right side
    379,929.60x = 202,338,955,100.16
  5. Step 5: Solve for x
    x = 202,338,955,100.16/379,929.60
  6. Step 6: Final answer
    x = 532,569.60

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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.