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Finding the Fourth Proportional to 665,677.80, 998,748.53 and 210,338.51

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Solution

The fourth proportional to 665,677.80, 998,748.53 and 210,338.51 is: 315,581.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,677.80 : 998,748.53 = 210,338.51 : x
  2. Step 2: Convert to fraction form
    665,677.80/998,748.53 = 210,338.51/x
  3. Step 3: Cross multiply
    665,677.80x = 998,748.53 × 210,338.51
  4. Step 4: Simplify right side
    665,677.80x = 210,075,279,110.07
  5. Step 5: Solve for x
    x = 210,075,279,110.07/665,677.80
  6. Step 6: Final answer
    x = 315,581.02

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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.