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Finding the Fourth Proportional to 371,572.53, 512,782.20 and 210,424.11

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Solution

The fourth proportional to 371,572.53, 512,782.20 and 210,424.11 is: 290,392.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,572.53 : 512,782.20 = 210,424.11 : x
  2. Step 2: Convert to fraction form
    371,572.53/512,782.20 = 210,424.11/x
  3. Step 3: Cross multiply
    371,572.53x = 512,782.20 × 210,424.11
  4. Step 4: Simplify right side
    371,572.53x = 107,901,738,058.84
  5. Step 5: Solve for x
    x = 107,901,738,058.84/371,572.53
  6. Step 6: Final answer
    x = 290,392.13

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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.