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Finding the Fourth Proportional to 215,319,239.60, 322,978,859.40 and 100,527,983.60

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Solution

The fourth proportional to 215,319,239.60, 322,978,859.40 and 100,527,983.60 is: 150,791,975.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,319,239.60 : 322,978,859.40 = 100,527,983.60 : x
  2. Step 2: Convert to fraction form
    215,319,239.60/322,978,859.40 = 100,527,983.60/x
  3. Step 3: Cross multiply
    215,319,239.60x = 322,978,859.40 × 100,527,983.60
  4. Step 4: Simplify right side
    215,319,239.60x = 32,468,413,480,909,900
  5. Step 5: Solve for x
    x = 32,468,413,480,909,900/215,319,239.60
  6. Step 6: Final answer
    x = 150,791,975.40

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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.