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Finding the Fourth Proportional to 279,969.92, 386,366.93 and 152,647.64

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Solution

The fourth proportional to 279,969.92, 386,366.93 and 152,647.64 is: 210,658.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,969.92 : 386,366.93 = 152,647.64 : x
  2. Step 2: Convert to fraction form
    279,969.92/386,366.93 = 152,647.64/x
  3. Step 3: Cross multiply
    279,969.92x = 386,366.93 × 152,647.64
  4. Step 4: Simplify right side
    279,969.92x = 58,977,997,343.47
  5. Step 5: Solve for x
    x = 58,977,997,343.47/279,969.92
  6. Step 6: Final answer
    x = 210,658.34

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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.