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Finding the Fourth Proportional to 279,455.34, 385,701.52 and 158,607.96

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Solution

The fourth proportional to 279,455.34, 385,701.52 and 158,607.96 is: 218,909.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,455.34 : 385,701.52 = 158,607.96 : x
  2. Step 2: Convert to fraction form
    279,455.34/385,701.52 = 158,607.96/x
  3. Step 3: Cross multiply
    279,455.34x = 385,701.52 × 158,607.96
  4. Step 4: Simplify right side
    279,455.34x = 61,175,331,256.10
  5. Step 5: Solve for x
    x = 61,175,331,256.10/279,455.34
  6. Step 6: Final answer
    x = 218,909.15

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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.