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Finding the Fourth Proportional to 638,888.50, 958,052.08 and 239,248.98

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Solution

The fourth proportional to 638,888.50, 958,052.08 and 239,248.98 is: 358,768.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,888.50 : 958,052.08 = 239,248.98 : x
  2. Step 2: Convert to fraction form
    638,888.50/958,052.08 = 239,248.98/x
  3. Step 3: Cross multiply
    638,888.50x = 958,052.08 × 239,248.98
  4. Step 4: Simplify right side
    638,888.50x = 229,212,982,926.88
  5. Step 5: Solve for x
    x = 229,212,982,926.88/638,888.50
  6. Step 6: Final answer
    x = 358,768.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.