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Finding the Fourth Proportional to 258,429.96, 356,665.28 and 156,459.26

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Solution

The fourth proportional to 258,429.96, 356,665.28 and 156,459.26 is: 215,933.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,429.96 : 356,665.28 = 156,459.26 : x
  2. Step 2: Convert to fraction form
    258,429.96/356,665.28 = 156,459.26/x
  3. Step 3: Cross multiply
    258,429.96x = 356,665.28 × 156,459.26
  4. Step 4: Simplify right side
    258,429.96x = 55,803,585,885.86
  5. Step 5: Solve for x
    x = 55,803,585,885.86/258,429.96
  6. Step 6: Final answer
    x = 215,933.11

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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.