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Finding the Fourth Proportional to 620,336.10, 930,666.15 and 199,622.10

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Solution

The fourth proportional to 620,336.10, 930,666.15 and 199,622.10 is: 299,485.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,336.10 : 930,666.15 = 199,622.10 : x
  2. Step 2: Convert to fraction form
    620,336.10/930,666.15 = 199,622.10/x
  3. Step 3: Cross multiply
    620,336.10x = 930,666.15 × 199,622.10
  4. Step 4: Simplify right side
    620,336.10x = 185,781,531,261.92
  5. Step 5: Solve for x
    x = 185,781,531,261.92/620,336.10
  6. Step 6: Final answer
    x = 299,485.28

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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.