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Finding the Fourth Proportional to 379,390.96, 569,086.44 and 98,907.40

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Solution

The fourth proportional to 379,390.96, 569,086.44 and 98,907.40 is: 148,361.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,390.96 : 569,086.44 = 98,907.40 : x
  2. Step 2: Convert to fraction form
    379,390.96/569,086.44 = 98,907.40/x
  3. Step 3: Cross multiply
    379,390.96x = 569,086.44 × 98,907.40
  4. Step 4: Simplify right side
    379,390.96x = 56,286,860,155.66
  5. Step 5: Solve for x
    x = 56,286,860,155.66/379,390.96
  6. Step 6: Final answer
    x = 148,361.10

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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.