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Finding the Fourth Proportional to 420,715.58, 580,662.33 and 248,626.22

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Solution

The fourth proportional to 420,715.58, 580,662.33 and 248,626.22 is: 343,148.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,715.58 : 580,662.33 = 248,626.22 : x
  2. Step 2: Convert to fraction form
    420,715.58/580,662.33 = 248,626.22/x
  3. Step 3: Cross multiply
    420,715.58x = 580,662.33 × 248,626.22
  4. Step 4: Simplify right side
    420,715.58x = 144,367,880,204.29
  5. Step 5: Solve for x
    x = 144,367,880,204.29/420,715.58
  6. Step 6: Final answer
    x = 343,148.40

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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.