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Finding the Fourth Proportional to 279,342.50, 385,501.40 and 158,488.88

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Solution

The fourth proportional to 279,342.50, 385,501.40 and 158,488.88 is: 218,719.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,342.50 : 385,501.40 = 158,488.88 : x
  2. Step 2: Convert to fraction form
    279,342.50/385,501.40 = 158,488.88/x
  3. Step 3: Cross multiply
    279,342.50x = 385,501.40 × 158,488.88
  4. Step 4: Simplify right side
    279,342.50x = 61,097,686,484.41
  5. Step 5: Solve for x
    x = 61,097,686,484.41/279,342.50
  6. Step 6: Final answer
    x = 218,719.62

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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.