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Finding the Fourth Proportional to 555,071.40, 766,017.11 and 340,169.96

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Solution

The fourth proportional to 555,071.40, 766,017.11 and 340,169.96 is: 469,445.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,071.40 : 766,017.11 = 340,169.96 : x
  2. Step 2: Convert to fraction form
    555,071.40/766,017.11 = 340,169.96/x
  3. Step 3: Cross multiply
    555,071.40x = 766,017.11 × 340,169.96
  4. Step 4: Simplify right side
    555,071.40x = 260,576,004,137.08
  5. Step 5: Solve for x
    x = 260,576,004,137.08/555,071.40
  6. Step 6: Final answer
    x = 469,445.92

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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.