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Finding the Fourth Proportional to 514,963.80, 772,664.40 and 248,587.20

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Solution

The fourth proportional to 514,963.80, 772,664.40 and 248,587.20 is: 372,986.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    514,963.80 : 772,664.40 = 248,587.20 : x
  2. Step 2: Convert to fraction form
    514,963.80/772,664.40 = 248,587.20/x
  3. Step 3: Cross multiply
    514,963.80x = 772,664.40 × 248,587.20
  4. Step 4: Simplify right side
    514,963.80x = 192,074,479,735.68
  5. Step 5: Solve for x
    x = 192,074,479,735.68/514,963.80
  6. Step 6: Final answer
    x = 372,986.37

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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.