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Finding the Fourth Proportional to 357,939, 493,955.82 and 207,123.48

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Solution

The fourth proportional to 357,939, 493,955.82 and 207,123.48 is: 285,830.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,939 : 493,955.82 = 207,123.48 : x
  2. Step 2: Convert to fraction form
    357,939/493,955.82 = 207,123.48/x
  3. Step 3: Cross multiply
    357,939x = 493,955.82 × 207,123.48
  4. Step 4: Simplify right side
    357,939x = 102,309,848,404.65
  5. Step 5: Solve for x
    x = 102,309,848,404.65/357,939
  6. Step 6: Final answer
    x = 285,830.40

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1.5x scale

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.