Home / 857,072.08-1,285,593.81-208,655.11

Finding the Fourth Proportional to 857,072.08, 1,285,593.81 and 208,655.11

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Solution

The fourth proportional to 857,072.08, 1,285,593.81 and 208,655.11 is: 312,979.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    857,072.08 : 1,285,593.81 = 208,655.11 : x
  2. Step 2: Convert to fraction form
    857,072.08/1,285,593.81 = 208,655.11/x
  3. Step 3: Cross multiply
    857,072.08x = 1,285,593.81 × 208,655.11
  4. Step 4: Simplify right side
    857,072.08x = 268,245,717,840.87
  5. Step 5: Solve for x
    x = 268,245,717,840.87/857,072.08
  6. Step 6: Final answer
    x = 312,979.18

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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.