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Finding the Fourth Proportional to 286,037.72, 394,730.79 and 158,713.01

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Solution

The fourth proportional to 286,037.72, 394,730.79 and 158,713.01 is: 219,023.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,037.72 : 394,730.79 = 158,713.01 : x
  2. Step 2: Convert to fraction form
    286,037.72/394,730.79 = 158,713.01/x
  3. Step 3: Cross multiply
    286,037.72x = 394,730.79 × 158,713.01
  4. Step 4: Simplify right side
    286,037.72x = 62,648,911,820.58
  5. Step 5: Solve for x
    x = 62,648,911,820.58/286,037.72
  6. Step 6: Final answer
    x = 219,023.25

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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.