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Finding the Fourth Proportional to 285,439.01, 393,532.43 and 245,580.93

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Solution

The fourth proportional to 285,439.01, 393,532.43 and 245,580.93 is: 338,580.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,439.01 : 393,532.43 = 245,580.93 : x
  2. Step 2: Convert to fraction form
    285,439.01/393,532.43 = 245,580.93/x
  3. Step 3: Cross multiply
    285,439.01x = 393,532.43 × 245,580.93
  4. Step 4: Simplify right side
    285,439.01x = 96,644,058,916.66
  5. Step 5: Solve for x
    x = 96,644,058,916.66/285,439.01
  6. Step 6: Final answer
    x = 338,580.42

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1.5x scale

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.