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Finding the Fourth Proportional to 571,731, 857,596.50 and 239,307

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Solution

The fourth proportional to 571,731, 857,596.50 and 239,307 is: 358,960.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,731 : 857,596.50 = 239,307 : x
  2. Step 2: Convert to fraction form
    571,731/857,596.50 = 239,307/x
  3. Step 3: Cross multiply
    571,731x = 857,596.50 × 239,307
  4. Step 4: Simplify right side
    571,731x = 205,228,845,625.50
  5. Step 5: Solve for x
    x = 205,228,845,625.50/571,731
  6. Step 6: Final answer
    x = 358,960.50

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Double scale
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Similar ratio
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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.