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Finding the Fourth Proportional to 518,462.48, 777,619.70 and 163,430.28

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Solution

The fourth proportional to 518,462.48, 777,619.70 and 163,430.28 is: 245,122.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,462.48 : 777,619.70 = 163,430.28 : x
  2. Step 2: Convert to fraction form
    518,462.48/777,619.70 = 163,430.28/x
  3. Step 3: Cross multiply
    518,462.48x = 777,619.70 × 163,430.28
  4. Step 4: Simplify right side
    518,462.48x = 127,086,605,304.52
  5. Step 5: Solve for x
    x = 127,086,605,304.52/518,462.48
  6. Step 6: Final answer
    x = 245,122.09

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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.