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Finding the Fourth Proportional to 285,986.40, 429,325.20 and 159,727.20

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Solution

The fourth proportional to 285,986.40, 429,325.20 and 159,727.20 is: 239,783.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,986.40 : 429,325.20 = 159,727.20 : x
  2. Step 2: Convert to fraction form
    285,986.40/429,325.20 = 159,727.20/x
  3. Step 3: Cross multiply
    285,986.40x = 429,325.20 × 159,727.20
  4. Step 4: Simplify right side
    285,986.40x = 68,574,912,085.44
  5. Step 5: Solve for x
    x = 68,574,912,085.44/285,986.40
  6. Step 6: Final answer
    x = 239,783.82

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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.