Home / 258,067,614.40-387,101,421.60-172,071,275.20

Finding the Fourth Proportional to 258,067,614.40, 387,101,421.60 and 172,071,275.20

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Solution

The fourth proportional to 258,067,614.40, 387,101,421.60 and 172,071,275.20 is: 258,106,912.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,067,614.40 : 387,101,421.60 = 172,071,275.20 : x
  2. Step 2: Convert to fraction form
    258,067,614.40/387,101,421.60 = 172,071,275.20/x
  3. Step 3: Cross multiply
    258,067,614.40x = 387,101,421.60 × 172,071,275.20
  4. Step 4: Simplify right side
    258,067,614.40x = 66,609,035,246,444,824
  5. Step 5: Solve for x
    x = 66,609,035,246,444,824/258,067,614.40
  6. Step 6: Final answer
    x = 258,106,912.80

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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.