Home / 207,988,828.40-311,899,261.80-71,604,009.20

Finding the Fourth Proportional to 207,988,828.40, 311,899,261.80 and 71,604,009.20

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Solution

The fourth proportional to 207,988,828.40, 311,899,261.80 and 71,604,009.20 is: 107,377,101.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,988,828.40 : 311,899,261.80 = 71,604,009.20 : x
  2. Step 2: Convert to fraction form
    207,988,828.40/311,899,261.80 = 71,604,009.20/x
  3. Step 3: Cross multiply
    207,988,828.40x = 311,899,261.80 × 71,604,009.20
  4. Step 4: Simplify right side
    207,988,828.40x = 22,333,237,611,400,412
  5. Step 5: Solve for x
    x = 22,333,237,611,400,412/207,988,828.40
  6. Step 6: Final answer
    x = 107,377,101.85

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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.