Home / 256,529.12-384,800.40-121,561.52

Finding the Fourth Proportional to 256,529.12, 384,800.40 and 121,561.52

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Solution

The fourth proportional to 256,529.12, 384,800.40 and 121,561.52 is: 182,345.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,529.12 : 384,800.40 = 121,561.52 : x
  2. Step 2: Convert to fraction form
    256,529.12/384,800.40 = 121,561.52/x
  3. Step 3: Cross multiply
    256,529.12x = 384,800.40 × 121,561.52
  4. Step 4: Simplify right side
    256,529.12x = 46,776,921,520.61
  5. Step 5: Solve for x
    x = 46,776,921,520.61/256,529.12
  6. Step 6: Final answer
    x = 182,345.46

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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.