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Finding the Fourth Proportional to 215,637.80, 323,456.70 and 97,365.80

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Solution

The fourth proportional to 215,637.80, 323,456.70 and 97,365.80 is: 146,048.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,637.80 : 323,456.70 = 97,365.80 : x
  2. Step 2: Convert to fraction form
    215,637.80/323,456.70 = 97,365.80/x
  3. Step 3: Cross multiply
    215,637.80x = 323,456.70 × 97,365.80
  4. Step 4: Simplify right side
    215,637.80x = 31,493,620,360.86
  5. Step 5: Solve for x
    x = 31,493,620,360.86/215,637.80
  6. Step 6: Final answer
    x = 146,048.70

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1.5x scale

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.