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Finding the Fourth Proportional to 613,320, 919,980 and 170,088

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Solution

The fourth proportional to 613,320, 919,980 and 170,088 is: 255,132

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,320 : 919,980 = 170,088 : x
  2. Step 2: Convert to fraction form
    613,320/919,980 = 170,088/x
  3. Step 3: Cross multiply
    613,320x = 919,980 × 170,088
  4. Step 4: Simplify right side
    613,320x = 156,477,558,240
  5. Step 5: Solve for x
    x = 156,477,558,240/613,320
  6. Step 6: Final answer
    x = 255,132

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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.