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Finding the Fourth Proportional to 343,710.40, 515,695.20 and 166,374.40

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Solution

The fourth proportional to 343,710.40, 515,695.20 and 166,374.40 is: 249,624.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,710.40 : 515,695.20 = 166,374.40 : x
  2. Step 2: Convert to fraction form
    343,710.40/515,695.20 = 166,374.40/x
  3. Step 3: Cross multiply
    343,710.40x = 515,695.20 × 166,374.40
  4. Step 4: Simplify right side
    343,710.40x = 85,798,479,482.88
  5. Step 5: Solve for x
    x = 85,798,479,482.88/343,710.40
  6. Step 6: Final answer
    x = 249,624.33

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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.