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Finding the Fourth Proportional to 480,401.31, 720,039.15 and 195,914.46

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Solution

The fourth proportional to 480,401.31, 720,039.15 and 195,914.46 is: 293,642.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,401.31 : 720,039.15 = 195,914.46 : x
  2. Step 2: Convert to fraction form
    480,401.31/720,039.15 = 195,914.46/x
  3. Step 3: Cross multiply
    480,401.31x = 720,039.15 × 195,914.46
  4. Step 4: Simplify right side
    480,401.31x = 141,066,081,251.11
  5. Step 5: Solve for x
    x = 141,066,081,251.11/480,401.31
  6. Step 6: Final answer
    x = 293,642.17

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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.