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Finding the Fourth Proportional to 343,433.48, 515,174.82 and 90,711.45

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Solution

The fourth proportional to 343,433.48, 515,174.82 and 90,711.45 is: 136,073.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,433.48 : 515,174.82 = 90,711.45 : x
  2. Step 2: Convert to fraction form
    343,433.48/515,174.82 = 90,711.45/x
  3. Step 3: Cross multiply
    343,433.48x = 515,174.82 × 90,711.45
  4. Step 4: Simplify right side
    343,433.48x = 46,732,255,330.44
  5. Step 5: Solve for x
    x = 46,732,255,330.44/343,433.48
  6. Step 6: Final answer
    x = 136,073.67

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1.5x scale

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.