Home / 345,275.55-476,504.21-209,315.23

Finding the Fourth Proportional to 345,275.55, 476,504.21 and 209,315.23

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Solution

The fourth proportional to 345,275.55, 476,504.21 and 209,315.23 is: 288,869.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,275.55 : 476,504.21 = 209,315.23 : x
  2. Step 2: Convert to fraction form
    345,275.55/476,504.21 = 209,315.23/x
  3. Step 3: Cross multiply
    345,275.55x = 476,504.21 × 209,315.23
  4. Step 4: Simplify right side
    345,275.55x = 99,739,587,644.15
  5. Step 5: Solve for x
    x = 99,739,587,644.15/345,275.55
  6. Step 6: Final answer
    x = 288,869.54

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1.5x scale

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.