Home / 257,820.80-386,741.67-122,815.46

Finding the Fourth Proportional to 257,820.80, 386,741.67 and 122,815.46

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Solution

The fourth proportional to 257,820.80, 386,741.67 and 122,815.46 is: 184,228.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,820.80 : 386,741.67 = 122,815.46 : x
  2. Step 2: Convert to fraction form
    257,820.80/386,741.67 = 122,815.46/x
  3. Step 3: Cross multiply
    257,820.80x = 386,741.67 × 122,815.46
  4. Step 4: Simplify right side
    257,820.80x = 47,497,854,168.51
  5. Step 5: Solve for x
    x = 47,497,854,168.51/257,820.80
  6. Step 6: Final answer
    x = 184,228.17

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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.