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Finding the Fourth Proportional to 283,730.30, 391,550.48 and 156,410.45

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Solution

The fourth proportional to 283,730.30, 391,550.48 and 156,410.45 is: 215,847.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,730.30 : 391,550.48 = 156,410.45 : x
  2. Step 2: Convert to fraction form
    283,730.30/391,550.48 = 156,410.45/x
  3. Step 3: Cross multiply
    283,730.30x = 391,550.48 × 156,410.45
  4. Step 4: Simplify right side
    283,730.30x = 61,242,585,992.46
  5. Step 5: Solve for x
    x = 61,242,585,992.46/283,730.30
  6. Step 6: Final answer
    x = 215,847.89

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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.