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Finding the Fourth Proportional to 249,120, 343,792.90 and 135,950.04

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Solution

The fourth proportional to 249,120, 343,792.90 and 135,950.04 is: 187,615.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,120 : 343,792.90 = 135,950.04 : x
  2. Step 2: Convert to fraction form
    249,120/343,792.90 = 135,950.04/x
  3. Step 3: Cross multiply
    249,120x = 343,792.90 × 135,950.04
  4. Step 4: Simplify right side
    249,120x = 46,738,658,506.72
  5. Step 5: Solve for x
    x = 46,738,658,506.72/249,120
  6. Step 6: Final answer
    x = 187,615.04

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.