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Finding the Fourth Proportional to 356,039,534.40, 534,059,301.60 and 218,290,027.20

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Solution

The fourth proportional to 356,039,534.40, 534,059,301.60 and 218,290,027.20 is: 327,435,040.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,039,534.40 : 534,059,301.60 = 218,290,027.20 : x
  2. Step 2: Convert to fraction form
    356,039,534.40/534,059,301.60 = 218,290,027.20/x
  3. Step 3: Cross multiply
    356,039,534.40x = 534,059,301.60 × 218,290,027.20
  4. Step 4: Simplify right side
    356,039,534.40x = 116,579,819,472,677,008
  5. Step 5: Solve for x
    x = 116,579,819,472,677,008/356,039,534.40
  6. Step 6: Final answer
    x = 327,435,040.80

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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.