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Finding the Fourth Proportional to 371,278.87, 512,365.35 and 201,513.01

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Solution

The fourth proportional to 371,278.87, 512,365.35 and 201,513.01 is: 278,088.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,278.87 : 512,365.35 = 201,513.01 : x
  2. Step 2: Convert to fraction form
    371,278.87/512,365.35 = 201,513.01/x
  3. Step 3: Cross multiply
    371,278.87x = 512,365.35 × 201,513.01
  4. Step 4: Simplify right side
    371,278.87x = 103,248,283,898.20
  5. Step 5: Solve for x
    x = 103,248,283,898.20/371,278.87
  6. Step 6: Final answer
    x = 278,088.23

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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.