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Finding the Fourth Proportional to 379,355.40, 569,033.10 and 98,872.65

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Solution

The fourth proportional to 379,355.40, 569,033.10 and 98,872.65 is: 148,308.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,355.40 : 569,033.10 = 98,872.65 : x
  2. Step 2: Convert to fraction form
    379,355.40/569,033.10 = 98,872.65/x
  3. Step 3: Cross multiply
    379,355.40x = 569,033.10 × 98,872.65
  4. Step 4: Simplify right side
    379,355.40x = 56,261,810,534.72
  5. Step 5: Solve for x
    x = 56,261,810,534.72/379,355.40
  6. Step 6: Final answer
    x = 148,308.98

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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.