Home / 386,056.15-579,076.02-105,573.40

Finding the Fourth Proportional to 386,056.15, 579,076.02 and 105,573.40

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Solution

The fourth proportional to 386,056.15, 579,076.02 and 105,573.40 is: 158,357.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,056.15 : 579,076.02 = 105,573.40 : x
  2. Step 2: Convert to fraction form
    386,056.15/579,076.02 = 105,573.40/x
  3. Step 3: Cross multiply
    386,056.15x = 579,076.02 × 105,573.40
  4. Step 4: Simplify right side
    386,056.15x = 61,135,022,842.18
  5. Step 5: Solve for x
    x = 61,135,022,842.18/386,056.15
  6. Step 6: Final answer
    x = 158,357.85

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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.