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Finding the Fourth Proportional to 447,495.31, 617,608.59 and 251,283.79

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Solution

The fourth proportional to 447,495.31, 617,608.59 and 251,283.79 is: 346,808.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,495.31 : 617,608.59 = 251,283.79 : x
  2. Step 2: Convert to fraction form
    447,495.31/617,608.59 = 251,283.79/x
  3. Step 3: Cross multiply
    447,495.31x = 617,608.59 × 251,283.79
  4. Step 4: Simplify right side
    447,495.31x = 155,195,024,143.71
  5. Step 5: Solve for x
    x = 155,195,024,143.71/447,495.31
  6. Step 6: Final answer
    x = 346,808.16

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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.