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Finding the Fourth Proportional to 343,280.70, 515,266.65 and 165,930.30

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Solution

The fourth proportional to 343,280.70, 515,266.65 and 165,930.30 is: 249,062.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,280.70 : 515,266.65 = 165,930.30 : x
  2. Step 2: Convert to fraction form
    343,280.70/515,266.65 = 165,930.30/x
  3. Step 3: Cross multiply
    343,280.70x = 515,266.65 × 165,930.30
  4. Step 4: Simplify right side
    343,280.70x = 85,498,349,814.50
  5. Step 5: Solve for x
    x = 85,498,349,814.50/343,280.70
  6. Step 6: Final answer
    x = 249,062.50

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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.