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Finding the Fourth Proportional to 249,399.54, 374,248.35 and 91,643.94

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Solution

The fourth proportional to 249,399.54, 374,248.35 and 91,643.94 is: 137,520.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,399.54 : 374,248.35 = 91,643.94 : x
  2. Step 2: Convert to fraction form
    249,399.54/374,248.35 = 91,643.94/x
  3. Step 3: Cross multiply
    249,399.54x = 374,248.35 × 91,643.94
  4. Step 4: Simplify right side
    249,399.54x = 34,297,593,332.50
  5. Step 5: Solve for x
    x = 34,297,593,332.50/249,399.54
  6. Step 6: Final answer
    x = 137,520.68

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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.