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Finding the Fourth Proportional to 551,890.86, 761,616.18 and 310,159.32

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Solution

The fourth proportional to 551,890.86, 761,616.18 and 310,159.32 is: 428,023.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,890.86 : 761,616.18 = 310,159.32 : x
  2. Step 2: Convert to fraction form
    551,890.86/761,616.18 = 310,159.32/x
  3. Step 3: Cross multiply
    551,890.86x = 761,616.18 × 310,159.32
  4. Step 4: Simplify right side
    551,890.86x = 236,222,356,489.80
  5. Step 5: Solve for x
    x = 236,222,356,489.80/551,890.86
  6. Step 6: Final answer
    x = 428,023.68

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.