Home / 386,899.47-533,920.95-225,723.31

Finding the Fourth Proportional to 386,899.47, 533,920.95 and 225,723.31

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Solution

The fourth proportional to 386,899.47, 533,920.95 and 225,723.31 is: 311,497.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,899.47 : 533,920.95 = 225,723.31 : x
  2. Step 2: Convert to fraction form
    386,899.47/533,920.95 = 225,723.31/x
  3. Step 3: Cross multiply
    386,899.47x = 533,920.95 × 225,723.31
  4. Step 4: Simplify right side
    386,899.47x = 120,518,402,777.54
  5. Step 5: Solve for x
    x = 120,518,402,777.54/386,899.47
  6. Step 6: Final answer
    x = 311,497.98

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.