Home / 258,327,007.20-387,052,021.20-155,875,768.80

Finding the Fourth Proportional to 258,327,007.20, 387,052,021.20 and 155,875,768.80

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Solution

The fourth proportional to 258,327,007.20, 387,052,021.20 and 155,875,768.80 is: 233,549,066.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,327,007.20 : 387,052,021.20 = 155,875,768.80 : x
  2. Step 2: Convert to fraction form
    258,327,007.20/387,052,021.20 = 155,875,768.80/x
  3. Step 3: Cross multiply
    258,327,007.20x = 387,052,021.20 × 155,875,768.80
  4. Step 4: Simplify right side
    258,327,007.20x = 60,332,031,370,143,904
  5. Step 5: Solve for x
    x = 60,332,031,370,143,904/258,327,007.20
  6. Step 6: Final answer
    x = 233,549,066.45

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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.