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Finding the Fourth Proportional to 285,466.54, 393,915.10 and 158,118.34

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Solution

The fourth proportional to 285,466.54, 393,915.10 and 158,118.34 is: 218,187.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,466.54 : 393,915.10 = 158,118.34 : x
  2. Step 2: Convert to fraction form
    285,466.54/393,915.10 = 158,118.34/x
  3. Step 3: Cross multiply
    285,466.54x = 393,915.10 × 158,118.34
  4. Step 4: Simplify right side
    285,466.54x = 62,285,201,712.93
  5. Step 5: Solve for x
    x = 62,285,201,712.93/285,466.54
  6. Step 6: Final answer
    x = 218,187.40

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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.