Home / 272,243,896.20-408,365,844.30-78,138,023.40

Finding the Fourth Proportional to 272,243,896.20, 408,365,844.30 and 78,138,023.40

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Solution

The fourth proportional to 272,243,896.20, 408,365,844.30 and 78,138,023.40 is: 117,207,035.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,243,896.20 : 408,365,844.30 = 78,138,023.40 : x
  2. Step 2: Convert to fraction form
    272,243,896.20/408,365,844.30 = 78,138,023.40/x
  3. Step 3: Cross multiply
    272,243,896.20x = 408,365,844.30 × 78,138,023.40
  4. Step 4: Simplify right side
    272,243,896.20x = 31,908,899,897,674,160
  5. Step 5: Solve for x
    x = 31,908,899,897,674,160/272,243,896.20
  6. Step 6: Final answer
    x = 117,207,035.10

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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.