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Finding the Fourth Proportional to 253,397.52, 349,683.90 and 138,673.86

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Solution

The fourth proportional to 253,397.52, 349,683.90 and 138,673.86 is: 191,367.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,397.52 : 349,683.90 = 138,673.86 : x
  2. Step 2: Convert to fraction form
    253,397.52/349,683.90 = 138,673.86/x
  3. Step 3: Cross multiply
    253,397.52x = 349,683.90 × 138,673.86
  4. Step 4: Simplify right side
    253,397.52x = 48,492,016,192.85
  5. Step 5: Solve for x
    x = 48,492,016,192.85/253,397.52
  6. Step 6: Final answer
    x = 191,367.37

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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.