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Finding the Fourth Proportional to 613,312, 919,968 and 170,080

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Solution

The fourth proportional to 613,312, 919,968 and 170,080 is: 255,120

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,312 : 919,968 = 170,080 : x
  2. Step 2: Convert to fraction form
    613,312/919,968 = 170,080/x
  3. Step 3: Cross multiply
    613,312x = 919,968 × 170,080
  4. Step 4: Simplify right side
    613,312x = 156,468,157,440
  5. Step 5: Solve for x
    x = 156,468,157,440/613,312
  6. Step 6: Final answer
    x = 255,120

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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.