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Finding the Fourth Proportional to 334,176.72, 500,378.28 and 261,404.40

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Solution

The fourth proportional to 334,176.72, 500,378.28 and 261,404.40 is: 391,412.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    334,176.72 : 500,378.28 = 261,404.40 : x
  2. Step 2: Convert to fraction form
    334,176.72/500,378.28 = 261,404.40/x
  3. Step 3: Cross multiply
    334,176.72x = 500,378.28 × 261,404.40
  4. Step 4: Simplify right side
    334,176.72x = 130,801,084,056.43
  5. Step 5: Solve for x
    x = 130,801,084,056.43/334,176.72
  6. Step 6: Final answer
    x = 391,412.91

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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.