Home / 390,027,982.70-585,041,974.05-131,157,166.70

Finding the Fourth Proportional to 390,027,982.70, 585,041,974.05 and 131,157,166.70

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Solution

The fourth proportional to 390,027,982.70, 585,041,974.05 and 131,157,166.70 is: 196,735,750.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,027,982.70 : 585,041,974.05 = 131,157,166.70 : x
  2. Step 2: Convert to fraction form
    390,027,982.70/585,041,974.05 = 131,157,166.70/x
  3. Step 3: Cross multiply
    390,027,982.70x = 585,041,974.05 × 131,157,166.70
  4. Step 4: Simplify right side
    390,027,982.70x = 76,732,447,716,972,912
  5. Step 5: Solve for x
    x = 76,732,447,716,972,912/390,027,982.70
  6. Step 6: Final answer
    x = 196,735,750.05

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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.