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Finding the Fourth Proportional to 279,583.04, 385,810.89 and 158,708.16

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Solution

The fourth proportional to 279,583.04, 385,810.89 and 158,708.16 is: 219,009.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,583.04 : 385,810.89 = 158,708.16 : x
  2. Step 2: Convert to fraction form
    279,583.04/385,810.89 = 158,708.16/x
  3. Step 3: Cross multiply
    279,583.04x = 385,810.89 × 158,708.16
  4. Step 4: Simplify right side
    279,583.04x = 61,231,336,459.86
  5. Step 5: Solve for x
    x = 61,231,336,459.86/279,583.04
  6. Step 6: Final answer
    x = 219,009.48

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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.