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Finding the Fourth Proportional to 371,278.88, 512,365.36 and 201,513.02

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Solution

The fourth proportional to 371,278.88, 512,365.36 and 201,513.02 is: 278,088.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,278.88 : 512,365.36 = 201,513.02 : x
  2. Step 2: Convert to fraction form
    371,278.88/512,365.36 = 201,513.02/x
  3. Step 3: Cross multiply
    371,278.88x = 512,365.36 × 201,513.02
  4. Step 4: Simplify right side
    371,278.88x = 103,248,291,036.99
  5. Step 5: Solve for x
    x = 103,248,291,036.99/371,278.88
  6. Step 6: Final answer
    x = 278,088.24

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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.