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Finding the Fourth Proportional to 420,713.58, 580,659.57 and 248,624.22

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Solution

The fourth proportional to 420,713.58, 580,659.57 and 248,624.22 is: 343,145.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,713.58 : 580,659.57 = 248,624.22 : x
  2. Step 2: Convert to fraction form
    420,713.58/580,659.57 = 248,624.22/x
  3. Step 3: Cross multiply
    420,713.58x = 580,659.57 × 248,624.22
  4. Step 4: Simplify right side
    420,713.58x = 144,366,032,676.79
  5. Step 5: Solve for x
    x = 144,366,032,676.79/420,713.58
  6. Step 6: Final answer
    x = 343,145.64

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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.