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Finding the Fourth Proportional to 371,579.32, 512,771 and 201,809.80

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Solution

The fourth proportional to 371,579.32, 512,771 and 201,809.80 is: 278,492.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,579.32 : 512,771 = 201,809.80 : x
  2. Step 2: Convert to fraction form
    371,579.32/512,771 = 201,809.80/x
  3. Step 3: Cross multiply
    371,579.32x = 512,771 × 201,809.80
  4. Step 4: Simplify right side
    371,579.32x = 103,482,212,955.80
  5. Step 5: Solve for x
    x = 103,482,212,955.80/371,579.32
  6. Step 6: Final answer
    x = 278,492.93

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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.