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Finding the Fourth Proportional to 666,543.30, 999,814.23 and 217,264.02

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Solution

The fourth proportional to 666,543.30, 999,814.23 and 217,264.02 is: 325,895.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,543.30 : 999,814.23 = 217,264.02 : x
  2. Step 2: Convert to fraction form
    666,543.30/999,814.23 = 217,264.02/x
  3. Step 3: Cross multiply
    666,543.30x = 999,814.23 × 217,264.02
  4. Step 4: Simplify right side
    666,543.30x = 217,223,658,863.01
  5. Step 5: Solve for x
    x = 217,223,658,863.01/666,543.30
  6. Step 6: Final answer
    x = 325,895.80

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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.