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Finding the Fourth Proportional to 273,904.60, 410,856.90 and 86,915.80

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Solution

The fourth proportional to 273,904.60, 410,856.90 and 86,915.80 is: 130,373.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    273,904.60 : 410,856.90 = 86,915.80 : x
  2. Step 2: Convert to fraction form
    273,904.60/410,856.90 = 86,915.80/x
  3. Step 3: Cross multiply
    273,904.60x = 410,856.90 × 86,915.80
  4. Step 4: Simplify right side
    273,904.60x = 35,709,956,149.02
  5. Step 5: Solve for x
    x = 35,709,956,149.02/273,904.60
  6. Step 6: Final answer
    x = 130,373.70

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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.