Home / 287,686.14-396,821.61-190,887.90

Finding the Fourth Proportional to 287,686.14, 396,821.61 and 190,887.90

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Solution

The fourth proportional to 287,686.14, 396,821.61 and 190,887.90 is: 263,302.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,686.14 : 396,821.61 = 190,887.90 : x
  2. Step 2: Convert to fraction form
    287,686.14/396,821.61 = 190,887.90/x
  3. Step 3: Cross multiply
    287,686.14x = 396,821.61 × 190,887.90
  4. Step 4: Simplify right side
    287,686.14x = 75,748,443,807.52
  5. Step 5: Solve for x
    x = 75,748,443,807.52/287,686.14
  6. Step 6: Final answer
    x = 263,302.37

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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.