Home / 420,219.56-579,911.22-229,240.04

Finding the Fourth Proportional to 420,219.56, 579,911.22 and 229,240.04

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Solution

The fourth proportional to 420,219.56, 579,911.22 and 229,240.04 is: 316,355.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,219.56 : 579,911.22 = 229,240.04 : x
  2. Step 2: Convert to fraction form
    420,219.56/579,911.22 = 229,240.04/x
  3. Step 3: Cross multiply
    420,219.56x = 579,911.22 × 229,240.04
  4. Step 4: Simplify right side
    420,219.56x = 132,938,871,269.25
  5. Step 5: Solve for x
    x = 132,938,871,269.25/420,219.56
  6. Step 6: Final answer
    x = 316,355.74

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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.