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Finding the Fourth Proportional to 339,685.62, 509,666.76 and 171,254.40

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Solution

The fourth proportional to 339,685.62, 509,666.76 and 171,254.40 is: 256,951.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,685.62 : 509,666.76 = 171,254.40 : x
  2. Step 2: Convert to fraction form
    339,685.62/509,666.76 = 171,254.40/x
  3. Step 3: Cross multiply
    339,685.62x = 509,666.76 × 171,254.40
  4. Step 4: Simplify right side
    339,685.62x = 87,282,675,183.74
  5. Step 5: Solve for x
    x = 87,282,675,183.74/339,685.62
  6. Step 6: Final answer
    x = 256,951.34

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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.