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Finding the Fourth Proportional to 249,410.70, 374,263.56 and 91,749.78

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Solution

The fourth proportional to 249,410.70, 374,263.56 and 91,749.78 is: 137,678.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,410.70 : 374,263.56 = 91,749.78 : x
  2. Step 2: Convert to fraction form
    249,410.70/374,263.56 = 91,749.78/x
  3. Step 3: Cross multiply
    249,410.70x = 374,263.56 × 91,749.78
  4. Step 4: Simplify right side
    249,410.70x = 34,338,599,292.02
  5. Step 5: Solve for x
    x = 34,338,599,292.02/249,410.70
  6. Step 6: Final answer
    x = 137,678.93

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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.