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Finding the Fourth Proportional to 555,070.74, 766,016.19 and 340,169.30

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Solution

The fourth proportional to 555,070.74, 766,016.19 and 340,169.30 is: 469,445.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,070.74 : 766,016.19 = 340,169.30 : x
  2. Step 2: Convert to fraction form
    555,070.74/766,016.19 = 340,169.30/x
  3. Step 3: Cross multiply
    555,070.74x = 766,016.19 × 340,169.30
  4. Step 4: Simplify right side
    555,070.74x = 260,575,190,183.45
  5. Step 5: Solve for x
    x = 260,575,190,183.45/555,070.74
  6. Step 6: Final answer
    x = 469,445.02

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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.