Home / 387,171,639.39-534,290,135.18-210,961,082.70

Finding the Fourth Proportional to 387,171,639.39, 534,290,135.18 and 210,961,082.70

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Solution

The fourth proportional to 387,171,639.39, 534,290,135.18 and 210,961,082.70 is: 291,122,628.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,171,639.39 : 534,290,135.18 = 210,961,082.70 : x
  2. Step 2: Convert to fraction form
    387,171,639.39/534,290,135.18 = 210,961,082.70/x
  3. Step 3: Cross multiply
    387,171,639.39x = 534,290,135.18 × 210,961,082.70
  4. Step 4: Simplify right side
    387,171,639.39x = 112,714,425,392,447,344
  5. Step 5: Solve for x
    x = 112,714,425,392,447,344/387,171,639.39
  6. Step 6: Final answer
    x = 291,122,628.64

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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.