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Finding the Fourth Proportional to 329,671,640.80, 494,507,461.20 and 84,027,800.80

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Solution

The fourth proportional to 329,671,640.80, 494,507,461.20 and 84,027,800.80 is: 126,041,701.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,671,640.80 : 494,507,461.20 = 84,027,800.80 : x
  2. Step 2: Convert to fraction form
    329,671,640.80/494,507,461.20 = 84,027,800.80/x
  3. Step 3: Cross multiply
    329,671,640.80x = 494,507,461.20 × 84,027,800.80
  4. Step 4: Simplify right side
    329,671,640.80x = 41,552,374,443,827,328
  5. Step 5: Solve for x
    x = 41,552,374,443,827,328/329,671,640.80
  6. Step 6: Final answer
    x = 126,041,701.20

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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.