Home / 345,275.80-476,504.56-209,315.48

Finding the Fourth Proportional to 345,275.80, 476,504.56 and 209,315.48

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Solution

The fourth proportional to 345,275.80, 476,504.56 and 209,315.48 is: 288,869.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,275.80 : 476,504.56 = 209,315.48 : x
  2. Step 2: Convert to fraction form
    345,275.80/476,504.56 = 209,315.48/x
  3. Step 3: Cross multiply
    345,275.80x = 476,504.56 × 209,315.48
  4. Step 4: Simplify right side
    345,275.80x = 99,739,778,984.04
  5. Step 5: Solve for x
    x = 99,739,778,984.04/345,275.80
  6. Step 6: Final answer
    x = 288,869.88

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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.