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Finding the Fourth Proportional to 404,907.78, 607,730.22 and 215,527.17

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Solution

The fourth proportional to 404,907.78, 607,730.22 and 215,527.17 is: 323,486.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,907.78 : 607,730.22 = 215,527.17 : x
  2. Step 2: Convert to fraction form
    404,907.78/607,730.22 = 215,527.17/x
  3. Step 3: Cross multiply
    404,907.78x = 607,730.22 × 215,527.17
  4. Step 4: Simplify right side
    404,907.78x = 130,982,374,440.08
  5. Step 5: Solve for x
    x = 130,982,374,440.08/404,907.78
  6. Step 6: Final answer
    x = 323,486.93

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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.