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Finding the Fourth Proportional to 379,569.20, 569,353.80 and 239,946.80

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Solution

The fourth proportional to 379,569.20, 569,353.80 and 239,946.80 is: 359,920.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,569.20 : 569,353.80 = 239,946.80 : x
  2. Step 2: Convert to fraction form
    379,569.20/569,353.80 = 239,946.80/x
  3. Step 3: Cross multiply
    379,569.20x = 569,353.80 × 239,946.80
  4. Step 4: Simplify right side
    379,569.20x = 136,614,622,377.84
  5. Step 5: Solve for x
    x = 136,614,622,377.84/379,569.20
  6. Step 6: Final answer
    x = 359,920.20

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1.5x scale

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.