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Finding the Fourth Proportional to 426,912.90, 640,369.35 and 160,733.13

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Solution

The fourth proportional to 426,912.90, 640,369.35 and 160,733.13 is: 241,099.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,912.90 : 640,369.35 = 160,733.13 : x
  2. Step 2: Convert to fraction form
    426,912.90/640,369.35 = 160,733.13/x
  3. Step 3: Cross multiply
    426,912.90x = 640,369.35 × 160,733.13
  4. Step 4: Simplify right side
    426,912.90x = 102,928,569,981.57
  5. Step 5: Solve for x
    x = 102,928,569,981.57/426,912.90
  6. Step 6: Final answer
    x = 241,099.70

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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.