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Finding the Fourth Proportional to 371,753.38, 513,017.88 and 210,608.05

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Solution

The fourth proportional to 371,753.38, 513,017.88 and 210,608.05 is: 290,638.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,753.38 : 513,017.88 = 210,608.05 : x
  2. Step 2: Convert to fraction form
    371,753.38/513,017.88 = 210,608.05/x
  3. Step 3: Cross multiply
    371,753.38x = 513,017.88 × 210,608.05
  4. Step 4: Simplify right side
    371,753.38x = 108,045,696,752.99
  5. Step 5: Solve for x
    x = 108,045,696,752.99/371,753.38
  6. Step 6: Final answer
    x = 290,638.10

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.