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Finding the Fourth Proportional to 486,005.10, 729,007.65 and 249,371.70

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Solution

The fourth proportional to 486,005.10, 729,007.65 and 249,371.70 is: 374,057.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,005.10 : 729,007.65 = 249,371.70 : x
  2. Step 2: Convert to fraction form
    486,005.10/729,007.65 = 249,371.70/x
  3. Step 3: Cross multiply
    486,005.10x = 729,007.65 × 249,371.70
  4. Step 4: Simplify right side
    486,005.10x = 181,793,876,993.51
  5. Step 5: Solve for x
    x = 181,793,876,993.51/486,005.10
  6. Step 6: Final answer
    x = 374,057.55

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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.