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Finding the Fourth Proportional to 279,682.02, 385,970.13 and 158,828.58

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Solution

The fourth proportional to 279,682.02, 385,970.13 and 158,828.58 is: 219,188.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,682.02 : 385,970.13 = 158,828.58 : x
  2. Step 2: Convert to fraction form
    279,682.02/385,970.13 = 158,828.58/x
  3. Step 3: Cross multiply
    279,682.02x = 385,970.13 × 158,828.58
  4. Step 4: Simplify right side
    279,682.02x = 61,303,087,670.32
  5. Step 5: Solve for x
    x = 61,303,087,670.32/279,682.02
  6. Step 6: Final answer
    x = 219,188.52

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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.