Home / 287,876.08-397,429.59-202,098.28

Finding the Fourth Proportional to 287,876.08, 397,429.59 and 202,098.28

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Solution

The fourth proportional to 287,876.08, 397,429.59 and 202,098.28 is: 279,008.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,876.08 : 397,429.59 = 202,098.28 : x
  2. Step 2: Convert to fraction form
    287,876.08/397,429.59 = 202,098.28/x
  3. Step 3: Cross multiply
    287,876.08x = 397,429.59 × 202,098.28
  4. Step 4: Simplify right side
    287,876.08x = 80,319,836,560.11
  5. Step 5: Solve for x
    x = 80,319,836,560.11/287,876.08
  6. Step 6: Final answer
    x = 279,008.37

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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.