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Finding the Fourth Proportional to 310,562.01, 428,590.98 and 189,683.73

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Solution

The fourth proportional to 310,562.01, 428,590.98 and 189,683.73 is: 261,772.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,562.01 : 428,590.98 = 189,683.73 : x
  2. Step 2: Convert to fraction form
    310,562.01/428,590.98 = 189,683.73/x
  3. Step 3: Cross multiply
    310,562.01x = 428,590.98 × 189,683.73
  4. Step 4: Simplify right side
    310,562.01x = 81,296,735,730.76
  5. Step 5: Solve for x
    x = 81,296,735,730.76/310,562.01
  6. Step 6: Final answer
    x = 261,772.96

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1.5x scale

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.