Home / 256,478.03-384,723.62-121,510.47

Finding the Fourth Proportional to 256,478.03, 384,723.62 and 121,510.47

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Solution

The fourth proportional to 256,478.03, 384,723.62 and 121,510.47 is: 182,268.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,478.03 : 384,723.62 = 121,510.47 : x
  2. Step 2: Convert to fraction form
    256,478.03/384,723.62 = 121,510.47/x
  3. Step 3: Cross multiply
    256,478.03x = 384,723.62 × 121,510.47
  4. Step 4: Simplify right side
    256,478.03x = 46,747,947,886.30
  5. Step 5: Solve for x
    x = 46,747,947,886.30/256,478.03
  6. Step 6: Final answer
    x = 182,268.82

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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.