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Finding the Fourth Proportional to 258,307.04, 356,492.57 and 156,388.66

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Solution

The fourth proportional to 258,307.04, 356,492.57 and 156,388.66 is: 215,833.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,307.04 : 356,492.57 = 156,388.66 : x
  2. Step 2: Convert to fraction form
    258,307.04/356,492.57 = 156,388.66/x
  3. Step 3: Cross multiply
    258,307.04x = 356,492.57 × 156,388.66
  4. Step 4: Simplify right side
    258,307.04x = 55,751,393,649.08
  5. Step 5: Solve for x
    x = 55,751,393,649.08/258,307.04
  6. Step 6: Final answer
    x = 215,833.81

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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.