Home / 345,885.30-477,240.33-209,916.18

Finding the Fourth Proportional to 345,885.30, 477,240.33 and 209,916.18

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Solution

The fourth proportional to 345,885.30, 477,240.33 and 209,916.18 is: 289,634.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,885.30 : 477,240.33 = 209,916.18 : x
  2. Step 2: Convert to fraction form
    345,885.30/477,240.33 = 209,916.18/x
  3. Step 3: Cross multiply
    345,885.30x = 477,240.33 × 209,916.18
  4. Step 4: Simplify right side
    345,885.30x = 100,180,467,015.54
  5. Step 5: Solve for x
    x = 100,180,467,015.54/345,885.30
  6. Step 6: Final answer
    x = 289,634.94

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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.