Home / 420,904.60-580,862.30-229,935.80

Finding the Fourth Proportional to 420,904.60, 580,862.30 and 229,935.80

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Solution

The fourth proportional to 420,904.60, 580,862.30 and 229,935.80 is: 317,319.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,904.60 : 580,862.30 = 229,935.80 : x
  2. Step 2: Convert to fraction form
    420,904.60/580,862.30 = 229,935.80/x
  3. Step 3: Cross multiply
    420,904.60x = 580,862.30 × 229,935.80
  4. Step 4: Simplify right side
    420,904.60x = 133,561,037,640.34
  5. Step 5: Solve for x
    x = 133,561,037,640.34/420,904.60
  6. Step 6: Final answer
    x = 317,319.03

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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.