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Finding the Fourth Proportional to 236,663.32, 354,918.30 and 78,849.40

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Solution

The fourth proportional to 236,663.32, 354,918.30 and 78,849.40 is: 118,248.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,663.32 : 354,918.30 = 78,849.40 : x
  2. Step 2: Convert to fraction form
    236,663.32/354,918.30 = 78,849.40/x
  3. Step 3: Cross multiply
    236,663.32x = 354,918.30 × 78,849.40
  4. Step 4: Simplify right side
    236,663.32x = 27,985,095,004.02
  5. Step 5: Solve for x
    x = 27,985,095,004.02/236,663.32
  6. Step 6: Final answer
    x = 118,248.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.