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Finding the Fourth Proportional to 249,797.48, 374,699.79 and 81,318.69

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Solution

The fourth proportional to 249,797.48, 374,699.79 and 81,318.69 is: 121,979.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,797.48 : 374,699.79 = 81,318.69 : x
  2. Step 2: Convert to fraction form
    249,797.48/374,699.79 = 81,318.69/x
  3. Step 3: Cross multiply
    249,797.48x = 374,699.79 × 81,318.69
  4. Step 4: Simplify right side
    249,797.48x = 30,470,096,066.08
  5. Step 5: Solve for x
    x = 30,470,096,066.08/249,797.48
  6. Step 6: Final answer
    x = 121,979.20

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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.