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Finding the Fourth Proportional to 306,698.03, 423,192.72 and 170,728.52

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Solution

The fourth proportional to 306,698.03, 423,192.72 and 170,728.52 is: 235,577.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,698.03 : 423,192.72 = 170,728.52 : x
  2. Step 2: Convert to fraction form
    306,698.03/423,192.72 = 170,728.52/x
  3. Step 3: Cross multiply
    306,698.03x = 423,192.72 × 170,728.52
  4. Step 4: Simplify right side
    306,698.03x = 72,251,064,644.41
  5. Step 5: Solve for x
    x = 72,251,064,644.41/306,698.03
  6. Step 6: Final answer
    x = 235,577.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.