Home / 345,679.30-477,257.61-282,168.10

Finding the Fourth Proportional to 345,679.30, 477,257.61 and 282,168.10

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Solution

The fourth proportional to 345,679.30, 477,257.61 and 282,168.10 is: 389,571.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,679.30 : 477,257.61 = 282,168.10 : x
  2. Step 2: Convert to fraction form
    345,679.30/477,257.61 = 282,168.10/x
  3. Step 3: Cross multiply
    345,679.30x = 477,257.61 × 282,168.10
  4. Step 4: Simplify right side
    345,679.30x = 134,666,873,024.24
  5. Step 5: Solve for x
    x = 134,666,873,024.24/345,679.30
  6. Step 6: Final answer
    x = 389,571.70

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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.