Home / 206,955,009.20-310,314,415.80-77,566,840.40

Finding the Fourth Proportional to 206,955,009.20, 310,314,415.80 and 77,566,840.40

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Solution

The fourth proportional to 206,955,009.20, 310,314,415.80 and 77,566,840.40 is: 116,305,997.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,955,009.20 : 310,314,415.80 = 77,566,840.40 : x
  2. Step 2: Convert to fraction form
    206,955,009.20/310,314,415.80 = 77,566,840.40/x
  3. Step 3: Cross multiply
    206,955,009.20x = 310,314,415.80 × 77,566,840.40
  4. Step 4: Simplify right side
    206,955,009.20x = 24,070,108,764,177,840
  5. Step 5: Solve for x
    x = 24,070,108,764,177,840/206,955,009.20
  6. Step 6: Final answer
    x = 116,305,997.41

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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.