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Finding the Fourth Proportional to 379,411.80, 569,117.70 and 202,264.80

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Solution

The fourth proportional to 379,411.80, 569,117.70 and 202,264.80 is: 303,397.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,411.80 : 569,117.70 = 202,264.80 : x
  2. Step 2: Convert to fraction form
    379,411.80/569,117.70 = 202,264.80/x
  3. Step 3: Cross multiply
    379,411.80x = 569,117.70 × 202,264.80
  4. Step 4: Simplify right side
    379,411.80x = 115,112,477,766.96
  5. Step 5: Solve for x
    x = 115,112,477,766.96/379,411.80
  6. Step 6: Final answer
    x = 303,397.20

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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.