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Finding the Fourth Proportional to 666,342.86, 999,513.47 and 217,062.99

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Solution

The fourth proportional to 666,342.86, 999,513.47 and 217,062.99 is: 325,594.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,342.86 : 999,513.47 = 217,062.99 : x
  2. Step 2: Convert to fraction form
    666,342.86/999,513.47 = 217,062.99/x
  3. Step 3: Cross multiply
    666,342.86x = 999,513.47 × 217,062.99
  4. Step 4: Simplify right side
    666,342.86x = 216,957,382,886.13
  5. Step 5: Solve for x
    x = 216,957,382,886.13/666,342.86
  6. Step 6: Final answer
    x = 325,594.22

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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.