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Finding the Fourth Proportional to 620,596.21, 930,875.71 and 171,344.50

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Solution

The fourth proportional to 620,596.21, 930,875.71 and 171,344.50 is: 257,011.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,596.21 : 930,875.71 = 171,344.50 : x
  2. Step 2: Convert to fraction form
    620,596.21/930,875.71 = 171,344.50/x
  3. Step 3: Cross multiply
    620,596.21x = 930,875.71 × 171,344.50
  4. Step 4: Simplify right side
    620,596.21x = 159,500,433,092.10
  5. Step 5: Solve for x
    x = 159,500,433,092.10/620,596.21
  6. Step 6: Final answer
    x = 257,011.61

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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.