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Finding the Fourth Proportional to 660,797.07, 990,710.79 and 211,259.22

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Solution

The fourth proportional to 660,797.07, 990,710.79 and 211,259.22 is: 316,733.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,797.07 : 990,710.79 = 211,259.22 : x
  2. Step 2: Convert to fraction form
    660,797.07/990,710.79 = 211,259.22/x
  3. Step 3: Cross multiply
    660,797.07x = 990,710.79 × 211,259.22
  4. Step 4: Simplify right side
    660,797.07x = 209,296,788,740.98
  5. Step 5: Solve for x
    x = 209,296,788,740.98/660,797.07
  6. Step 6: Final answer
    x = 316,733.83

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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.