Home / 386,309.64-579,623.88-208,607.38

Finding the Fourth Proportional to 386,309.64, 579,623.88 and 208,607.38

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Solution

The fourth proportional to 386,309.64, 579,623.88 and 208,607.38 is: 312,997.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,309.64 : 579,623.88 = 208,607.38 : x
  2. Step 2: Convert to fraction form
    386,309.64/579,623.88 = 208,607.38/x
  3. Step 3: Cross multiply
    386,309.64x = 579,623.88 × 208,607.38
  4. Step 4: Simplify right side
    386,309.64x = 120,913,818,992.23
  5. Step 5: Solve for x
    x = 120,913,818,992.23/386,309.64
  6. Step 6: Final answer
    x = 312,997.16

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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.