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Finding the Fourth Proportional to 383,372.20, 575,088.06 and 130,574.76

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Solution

The fourth proportional to 383,372.20, 575,088.06 and 130,574.76 is: 195,872.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,372.20 : 575,088.06 = 130,574.76 : x
  2. Step 2: Convert to fraction form
    383,372.20/575,088.06 = 130,574.76/x
  3. Step 3: Cross multiply
    383,372.20x = 575,088.06 × 130,574.76
  4. Step 4: Simplify right side
    383,372.20x = 75,091,985,413.37
  5. Step 5: Solve for x
    x = 75,091,985,413.37/383,372.20
  6. Step 6: Final answer
    x = 195,872.28

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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.