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Finding the Fourth Proportional to 620,666.60, 930,998.12 and 165,257.80

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Solution

The fourth proportional to 620,666.60, 930,998.12 and 165,257.80 is: 247,886.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,666.60 : 930,998.12 = 165,257.80 : x
  2. Step 2: Convert to fraction form
    620,666.60/930,998.12 = 165,257.80/x
  3. Step 3: Cross multiply
    620,666.60x = 930,998.12 × 165,257.80
  4. Step 4: Simplify right side
    620,666.60x = 153,854,701,115.34
  5. Step 5: Solve for x
    x = 153,854,701,115.34/620,666.60
  6. Step 6: Final answer
    x = 247,886.23

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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.