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Finding the Fourth Proportional to 371,036.26, 512,030.20 and 209,887.92

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Solution

The fourth proportional to 371,036.26, 512,030.20 and 209,887.92 is: 289,645.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,036.26 : 512,030.20 = 209,887.92 : x
  2. Step 2: Convert to fraction form
    371,036.26/512,030.20 = 209,887.92/x
  3. Step 3: Cross multiply
    371,036.26x = 512,030.20 × 209,887.92
  4. Step 4: Simplify right side
    371,036.26x = 107,468,953,655.18
  5. Step 5: Solve for x
    x = 107,468,953,655.18/371,036.26
  6. Step 6: Final answer
    x = 289,645.42

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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.