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Finding the Fourth Proportional to 143,281.71, 214,923.15 and 43,442.76

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Solution

The fourth proportional to 143,281.71, 214,923.15 and 43,442.76 is: 65,164.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,281.71 : 214,923.15 = 43,442.76 : x
  2. Step 2: Convert to fraction form
    143,281.71/214,923.15 = 43,442.76/x
  3. Step 3: Cross multiply
    143,281.71x = 214,923.15 × 43,442.76
  4. Step 4: Simplify right side
    143,281.71x = 9,336,854,823.89
  5. Step 5: Solve for x
    x = 9,336,854,823.89/143,281.71
  6. Step 6: Final answer
    x = 65,164.32

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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.