Home / 388,372,341.87-536,081,555.21-309,132,753.75

Finding the Fourth Proportional to 388,372,341.87, 536,081,555.21 and 309,132,753.75

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Solution

The fourth proportional to 388,372,341.87, 536,081,555.21 and 309,132,753.75 is: 426,704,864.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,372,341.87 : 536,081,555.21 = 309,132,753.75 : x
  2. Step 2: Convert to fraction form
    388,372,341.87/536,081,555.21 = 309,132,753.75/x
  3. Step 3: Cross multiply
    388,372,341.87x = 536,081,555.21 × 309,132,753.75
  4. Step 4: Simplify right side
    388,372,341.87x = 165,720,367,395,104,288
  5. Step 5: Solve for x
    x = 165,720,367,395,104,288/388,372,341.87
  6. Step 6: Final answer
    x = 426,704,864.20

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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.