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Finding the Fourth Proportional to 249,780.80, 374,572.60 and 99,993.20

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Solution

The fourth proportional to 249,780.80, 374,572.60 and 99,993.20 is: 149,950.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,780.80 : 374,572.60 = 99,993.20 : x
  2. Step 2: Convert to fraction form
    249,780.80/374,572.60 = 99,993.20/x
  3. Step 3: Cross multiply
    249,780.80x = 374,572.60 × 99,993.20
  4. Step 4: Simplify right side
    249,780.80x = 37,454,712,906.32
  5. Step 5: Solve for x
    x = 37,454,712,906.32/249,780.80
  6. Step 6: Final answer
    x = 149,950.33

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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.