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Finding the Fourth Proportional to 258,613.76, 356,881.43 and 149,722.70

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Solution

The fourth proportional to 258,613.76, 356,881.43 and 149,722.70 is: 206,614.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,613.76 : 356,881.43 = 149,722.70 : x
  2. Step 2: Convert to fraction form
    258,613.76/356,881.43 = 149,722.70/x
  3. Step 3: Cross multiply
    258,613.76x = 356,881.43 × 149,722.70
  4. Step 4: Simplify right side
    258,613.76x = 53,433,249,869.36
  5. Step 5: Solve for x
    x = 53,433,249,869.36/258,613.76
  6. Step 6: Final answer
    x = 206,614.10

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1.5x scale

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.