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Finding the Fourth Proportional to 312,455.35, 468,402.36 and 112,728.79

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Solution

The fourth proportional to 312,455.35, 468,402.36 and 112,728.79 is: 168,991.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,455.35 : 468,402.36 = 112,728.79 : x
  2. Step 2: Convert to fraction form
    312,455.35/468,402.36 = 112,728.79/x
  3. Step 3: Cross multiply
    312,455.35x = 468,402.36 × 112,728.79
  4. Step 4: Simplify right side
    312,455.35x = 52,802,431,275.94
  5. Step 5: Solve for x
    x = 52,802,431,275.94/312,455.35
  6. Step 6: Final answer
    x = 168,991.93

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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.