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Finding the Fourth Proportional to 440,411, 607,767.79 and 239,207

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Solution

The fourth proportional to 440,411, 607,767.79 and 239,207 is: 330,105.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,411 : 607,767.79 = 239,207 : x
  2. Step 2: Convert to fraction form
    440,411/607,767.79 = 239,207/x
  3. Step 3: Cross multiply
    440,411x = 607,767.79 × 239,207
  4. Step 4: Simplify right side
    440,411x = 145,382,309,742.53
  5. Step 5: Solve for x
    x = 145,382,309,742.53/440,411
  6. Step 6: Final answer
    x = 330,105.99

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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.