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Finding the Fourth Proportional to 248,912.40, 343,478.70 and 141,457.80

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Solution

The fourth proportional to 248,912.40, 343,478.70 and 141,457.80 is: 195,200.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,912.40 : 343,478.70 = 141,457.80 : x
  2. Step 2: Convert to fraction form
    248,912.40/343,478.70 = 141,457.80/x
  3. Step 3: Cross multiply
    248,912.40x = 343,478.70 × 141,457.80
  4. Step 4: Simplify right side
    248,912.40x = 48,587,741,248.86
  5. Step 5: Solve for x
    x = 48,587,741,248.86/248,912.40
  6. Step 6: Final answer
    x = 195,200.16

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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.