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Finding the Fourth Proportional to 243,690.46, 365,540.70 and 75,210.88

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Solution

The fourth proportional to 243,690.46, 365,540.70 and 75,210.88 is: 112,817.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,690.46 : 365,540.70 = 75,210.88 : x
  2. Step 2: Convert to fraction form
    243,690.46/365,540.70 = 75,210.88/x
  3. Step 3: Cross multiply
    243,690.46x = 365,540.70 × 75,210.88
  4. Step 4: Simplify right side
    243,690.46x = 27,492,637,722.82
  5. Step 5: Solve for x
    x = 27,492,637,722.82/243,690.46
  6. Step 6: Final answer
    x = 112,817.87

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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.