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Finding the Fourth Proportional to 371,427.48, 512,581.50 and 210,279.60

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Solution

The fourth proportional to 371,427.48, 512,581.50 and 210,279.60 is: 290,192.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,427.48 : 512,581.50 = 210,279.60 : x
  2. Step 2: Convert to fraction form
    371,427.48/512,581.50 = 210,279.60/x
  3. Step 3: Cross multiply
    371,427.48x = 512,581.50 × 210,279.60
  4. Step 4: Simplify right side
    371,427.48x = 107,785,432,787.40
  5. Step 5: Solve for x
    x = 107,785,432,787.40/371,427.48
  6. Step 6: Final answer
    x = 290,192.40

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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.