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Finding the Fourth Proportional to 236,248, 326,021.46 and 128,817.77

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Solution

The fourth proportional to 236,248, 326,021.46 and 128,817.77 is: 177,768.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,248 : 326,021.46 = 128,817.77 : x
  2. Step 2: Convert to fraction form
    236,248/326,021.46 = 128,817.77/x
  3. Step 3: Cross multiply
    236,248x = 326,021.46 × 128,817.77
  4. Step 4: Simplify right side
    236,248x = 41,997,357,449.34
  5. Step 5: Solve for x
    x = 41,997,357,449.34/236,248
  6. Step 6: Final answer
    x = 177,768.10

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1.5x scale

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.