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Finding the Fourth Proportional to 518,344.01, 777,463.43 and 139,215.48

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Solution

The fourth proportional to 518,344.01, 777,463.43 and 139,215.48 is: 208,809.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,344.01 : 777,463.43 = 139,215.48 : x
  2. Step 2: Convert to fraction form
    518,344.01/777,463.43 = 139,215.48/x
  3. Step 3: Cross multiply
    518,344.01x = 777,463.43 × 139,215.48
  4. Step 4: Simplify right side
    518,344.01x = 108,234,940,006.50
  5. Step 5: Solve for x
    x = 108,234,940,006.50/518,344.01
  6. Step 6: Final answer
    x = 208,809.09

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1.5x scale

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.