Home / 287,848.88-431,669.64-121,649.84

Finding the Fourth Proportional to 287,848.88, 431,669.64 and 121,649.84

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Solution

The fourth proportional to 287,848.88, 431,669.64 and 121,649.84 is: 182,430.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,848.88 : 431,669.64 = 121,649.84 : x
  2. Step 2: Convert to fraction form
    287,848.88/431,669.64 = 121,649.84/x
  3. Step 3: Cross multiply
    287,848.88x = 431,669.64 × 121,649.84
  4. Step 4: Simplify right side
    287,848.88x = 52,512,542,638.86
  5. Step 5: Solve for x
    x = 52,512,542,638.86/287,848.88
  6. Step 6: Final answer
    x = 182,430.94

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.