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Finding the Fourth Proportional to 551,590.40, 761,169.12 and 306,563.76

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Solution

The fourth proportional to 551,590.40, 761,169.12 and 306,563.76 is: 423,043.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,590.40 : 761,169.12 = 306,563.76 : x
  2. Step 2: Convert to fraction form
    551,590.40/761,169.12 = 306,563.76/x
  3. Step 3: Cross multiply
    551,590.40x = 761,169.12 × 306,563.76
  4. Step 4: Simplify right side
    551,590.40x = 233,346,867,423.09
  5. Step 5: Solve for x
    x = 233,346,867,423.09/551,590.40
  6. Step 6: Final answer
    x = 423,043.74

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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.