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Finding the Fourth Proportional to 218,124.60, 327,186.90 and 77,897.40

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Solution

The fourth proportional to 218,124.60, 327,186.90 and 77,897.40 is: 116,846.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,124.60 : 327,186.90 = 77,897.40 : x
  2. Step 2: Convert to fraction form
    218,124.60/327,186.90 = 77,897.40/x
  3. Step 3: Cross multiply
    218,124.60x = 327,186.90 × 77,897.40
  4. Step 4: Simplify right side
    218,124.60x = 25,487,008,824.06
  5. Step 5: Solve for x
    x = 25,487,008,824.06/218,124.60
  6. Step 6: Final answer
    x = 116,846.10

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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.