Home / 515,067.30-772,718.40-160,117.20

Finding the Fourth Proportional to 515,067.30, 772,718.40 and 160,117.20

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Solution

The fourth proportional to 515,067.30, 772,718.40 and 160,117.20 is: 240,212.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,067.30 : 772,718.40 = 160,117.20 : x
  2. Step 2: Convert to fraction form
    515,067.30/772,718.40 = 160,117.20/x
  3. Step 3: Cross multiply
    515,067.30x = 772,718.40 × 160,117.20
  4. Step 4: Simplify right side
    515,067.30x = 123,725,506,596.48
  5. Step 5: Solve for x
    x = 123,725,506,596.48/515,067.30
  6. Step 6: Final answer
    x = 240,212.31

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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.