Home / 345,869.51-477,218.66-209,900.43

Finding the Fourth Proportional to 345,869.51, 477,218.66 and 209,900.43

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Solution

The fourth proportional to 345,869.51, 477,218.66 and 209,900.43 is: 289,613.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,869.51 : 477,218.66 = 209,900.43 : x
  2. Step 2: Convert to fraction form
    345,869.51/477,218.66 = 209,900.43/x
  3. Step 3: Cross multiply
    345,869.51x = 477,218.66 × 209,900.43
  4. Step 4: Simplify right side
    345,869.51x = 100,168,400,888.52
  5. Step 5: Solve for x
    x = 100,168,400,888.52/345,869.51
  6. Step 6: Final answer
    x = 289,613.28

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.