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Finding the Fourth Proportional to 208,010.98, 312,063.44 and 65,864.88

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Solution

The fourth proportional to 208,010.98, 312,063.44 and 65,864.88 is: 98,812.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,010.98 : 312,063.44 = 65,864.88 : x
  2. Step 2: Convert to fraction form
    208,010.98/312,063.44 = 65,864.88/x
  3. Step 3: Cross multiply
    208,010.98x = 312,063.44 × 65,864.88
  4. Step 4: Simplify right side
    208,010.98x = 20,554,021,027.99
  5. Step 5: Solve for x
    x = 20,554,021,027.99/208,010.98
  6. Step 6: Final answer
    x = 98,812.19

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1.5x scale

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.