Home / 312,038,180.70-430,405,347.11-200,669,823.51

Finding the Fourth Proportional to 312,038,180.70, 430,405,347.11 and 200,669,823.51

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Solution

The fourth proportional to 312,038,180.70, 430,405,347.11 and 200,669,823.51 is: 276,791,015.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,038,180.70 : 430,405,347.11 = 200,669,823.51 : x
  2. Step 2: Convert to fraction form
    312,038,180.70/430,405,347.11 = 200,669,823.51/x
  3. Step 3: Cross multiply
    312,038,180.70x = 430,405,347.11 × 200,669,823.51
  4. Step 4: Simplify right side
    312,038,180.70x = 86,369,365,041,320,640
  5. Step 5: Solve for x
    x = 86,369,365,041,320,640/312,038,180.70
  6. Step 6: Final answer
    x = 276,791,015.92

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.