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Finding the Fourth Proportional to 285,058.02, 427,518.96 and 85,324.80

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Solution

The fourth proportional to 285,058.02, 427,518.96 and 85,324.80 is: 127,966.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,058.02 : 427,518.96 = 85,324.80 : x
  2. Step 2: Convert to fraction form
    285,058.02/427,518.96 = 85,324.80/x
  3. Step 3: Cross multiply
    285,058.02x = 427,518.96 × 85,324.80
  4. Step 4: Simplify right side
    285,058.02x = 36,477,969,758.21
  5. Step 5: Solve for x
    x = 36,477,969,758.21/285,058.02
  6. Step 6: Final answer
    x = 127,966.82

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1.5x scale

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.