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Finding the Fourth Proportional to 285,602.16, 394,135.30 and 156,539.59

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Solution

The fourth proportional to 285,602.16, 394,135.30 and 156,539.59 is: 216,027.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,602.16 : 394,135.30 = 156,539.59 : x
  2. Step 2: Convert to fraction form
    285,602.16/394,135.30 = 156,539.59/x
  3. Step 3: Cross multiply
    285,602.16x = 394,135.30 × 156,539.59
  4. Step 4: Simplify right side
    285,602.16x = 61,697,778,367.85
  5. Step 5: Solve for x
    x = 61,697,778,367.85/285,602.16
  6. Step 6: Final answer
    x = 216,027.00

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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.