Home / 287,756.82-397,155.15-180,418.86

Finding the Fourth Proportional to 287,756.82, 397,155.15 and 180,418.86

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Solution

The fourth proportional to 287,756.82, 397,155.15 and 180,418.86 is: 249,009.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,756.82 : 397,155.15 = 180,418.86 : x
  2. Step 2: Convert to fraction form
    287,756.82/397,155.15 = 180,418.86/x
  3. Step 3: Cross multiply
    287,756.82x = 397,155.15 × 180,418.86
  4. Step 4: Simplify right side
    287,756.82x = 71,654,279,406.13
  5. Step 5: Solve for x
    x = 71,654,279,406.13/287,756.82
  6. Step 6: Final answer
    x = 249,009.84

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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.