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Finding the Fourth Proportional to 279,973.92, 386,355.60 and 152,652

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Solution

The fourth proportional to 279,973.92, 386,355.60 and 152,652 is: 210,655.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,973.92 : 386,355.60 = 152,652 : x
  2. Step 2: Convert to fraction form
    279,973.92/386,355.60 = 152,652/x
  3. Step 3: Cross multiply
    279,973.92x = 386,355.60 × 152,652
  4. Step 4: Simplify right side
    279,973.92x = 58,977,955,051.20
  5. Step 5: Solve for x
    x = 58,977,955,051.20/279,973.92
  6. Step 6: Final answer
    x = 210,655.17

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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.