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Finding the Fourth Proportional to 269,688.40, 404,532.60 and 145,272.40

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Solution

The fourth proportional to 269,688.40, 404,532.60 and 145,272.40 is: 217,908.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,688.40 : 404,532.60 = 145,272.40 : x
  2. Step 2: Convert to fraction form
    269,688.40/404,532.60 = 145,272.40/x
  3. Step 3: Cross multiply
    269,688.40x = 404,532.60 × 145,272.40
  4. Step 4: Simplify right side
    269,688.40x = 58,767,421,680.24
  5. Step 5: Solve for x
    x = 58,767,421,680.24/269,688.40
  6. Step 6: Final answer
    x = 217,908.60

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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.