Home / 217,831,688.70-326,816,605.89-77,769,141

Finding the Fourth Proportional to 217,831,688.70, 326,816,605.89 and 77,769,141

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Solution

The fourth proportional to 217,831,688.70, 326,816,605.89 and 77,769,141 is: 116,678,371.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,831,688.70 : 326,816,605.89 = 77,769,141 : x
  2. Step 2: Convert to fraction form
    217,831,688.70/326,816,605.89 = 77,769,141/x
  3. Step 3: Cross multiply
    217,831,688.70x = 326,816,605.89 × 77,769,141
  4. Step 4: Simplify right side
    217,831,688.70x = 25,416,246,704,600,840
  5. Step 5: Solve for x
    x = 25,416,246,704,600,840/217,831,688.70
  6. Step 6: Final answer
    x = 116,678,371.53

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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.