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Finding the Fourth Proportional to 440,378.64, 660,398.94 and 187,498.80

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Solution

The fourth proportional to 440,378.64, 660,398.94 and 187,498.80 is: 281,176.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,378.64 : 660,398.94 = 187,498.80 : x
  2. Step 2: Convert to fraction form
    440,378.64/660,398.94 = 187,498.80/x
  3. Step 3: Cross multiply
    440,378.64x = 660,398.94 × 187,498.80
  4. Step 4: Simplify right side
    440,378.64x = 123,824,008,771.27
  5. Step 5: Solve for x
    x = 123,824,008,771.27/440,378.64
  6. Step 6: Final answer
    x = 281,176.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.