Home / 206,588,005.20-309,164,562.45-142,017,923.70

Finding the Fourth Proportional to 206,588,005.20, 309,164,562.45 and 142,017,923.70

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Solution

The fourth proportional to 206,588,005.20, 309,164,562.45 and 142,017,923.70 is: 212,533,681.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,588,005.20 : 309,164,562.45 = 142,017,923.70 : x
  2. Step 2: Convert to fraction form
    206,588,005.20/309,164,562.45 = 142,017,923.70/x
  3. Step 3: Cross multiply
    206,588,005.20x = 309,164,562.45 × 142,017,923.70
  4. Step 4: Simplify right side
    206,588,005.20x = 43,906,909,240,767,976
  5. Step 5: Solve for x
    x = 43,906,909,240,767,976/206,588,005.20
  6. Step 6: Final answer
    x = 212,533,681.22

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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.