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Finding the Fourth Proportional to 397,069.70, 595,678.35 and 130,840.72

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Solution

The fourth proportional to 397,069.70, 595,678.35 and 130,840.72 is: 196,285.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,069.70 : 595,678.35 = 130,840.72 : x
  2. Step 2: Convert to fraction form
    397,069.70/595,678.35 = 130,840.72/x
  3. Step 3: Cross multiply
    397,069.70x = 595,678.35 × 130,840.72
  4. Step 4: Simplify right side
    397,069.70x = 77,938,983,203.87
  5. Step 5: Solve for x
    x = 77,938,983,203.87/397,069.70
  6. Step 6: Final answer
    x = 196,285.40

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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.