Home / 378,128,344.68-521,819,390.34-210,875,164.92

Finding the Fourth Proportional to 378,128,344.68, 521,819,390.34 and 210,875,164.92

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Solution

The fourth proportional to 378,128,344.68, 521,819,390.34 and 210,875,164.92 is: 291,008,996.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,128,344.68 : 521,819,390.34 = 210,875,164.92 : x
  2. Step 2: Convert to fraction form
    378,128,344.68/521,819,390.34 = 210,875,164.92/x
  3. Step 3: Cross multiply
    378,128,344.68x = 521,819,390.34 × 210,875,164.92
  4. Step 4: Simplify right side
    378,128,344.68x = 110,038,749,996,401,344
  5. Step 5: Solve for x
    x = 110,038,749,996,401,344/378,128,344.68
  6. Step 6: Final answer
    x = 291,008,996.14

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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.