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Finding the Fourth Proportional to 285,805.02, 394,416.35 and 156,735.32

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Solution

The fourth proportional to 285,805.02, 394,416.35 and 156,735.32 is: 216,297.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,805.02 : 394,416.35 = 156,735.32 : x
  2. Step 2: Convert to fraction form
    285,805.02/394,416.35 = 156,735.32/x
  3. Step 3: Cross multiply
    285,805.02x = 394,416.35 × 156,735.32
  4. Step 4: Simplify right side
    285,805.02x = 61,818,972,830.48
  5. Step 5: Solve for x
    x = 61,818,972,830.48/285,805.02
  6. Step 6: Final answer
    x = 216,297.72

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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.