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Finding the Fourth Proportional to 440,560, 607,974.42 and 239,356

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Solution

The fourth proportional to 440,560, 607,974.42 and 239,356 is: 330,312.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,560 : 607,974.42 = 239,356 : x
  2. Step 2: Convert to fraction form
    440,560/607,974.42 = 239,356/x
  3. Step 3: Cross multiply
    440,560x = 607,974.42 × 239,356
  4. Step 4: Simplify right side
    440,560x = 145,522,325,273.52
  5. Step 5: Solve for x
    x = 145,522,325,273.52/440,560
  6. Step 6: Final answer
    x = 330,312.16

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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.