Home / 258,499,900.80-387,078,004.80-204,304,291.20

Finding the Fourth Proportional to 258,499,900.80, 387,078,004.80 and 204,304,291.20

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Solution

The fourth proportional to 258,499,900.80, 387,078,004.80 and 204,304,291.20 is: 305,925,445.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,499,900.80 : 387,078,004.80 = 204,304,291.20 : x
  2. Step 2: Convert to fraction form
    258,499,900.80/387,078,004.80 = 204,304,291.20/x
  3. Step 3: Cross multiply
    258,499,900.80x = 387,078,004.80 × 204,304,291.20
  4. Step 4: Simplify right side
    258,499,900.80x = 79,081,697,409,774,192
  5. Step 5: Solve for x
    x = 79,081,697,409,774,192/258,499,900.80
  6. Step 6: Final answer
    x = 305,925,445.87

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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.