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Finding the Fourth Proportional to 312,673.20, 468,664.20 and 172,532.40

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Solution

The fourth proportional to 312,673.20, 468,664.20 and 172,532.40 is: 258,607.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,673.20 : 468,664.20 = 172,532.40 : x
  2. Step 2: Convert to fraction form
    312,673.20/468,664.20 = 172,532.40/x
  3. Step 3: Cross multiply
    312,673.20x = 468,664.20 × 172,532.40
  4. Step 4: Simplify right side
    312,673.20x = 80,859,759,220.08
  5. Step 5: Solve for x
    x = 80,859,759,220.08/312,673.20
  6. Step 6: Final answer
    x = 258,607.90

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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.