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Finding the Fourth Proportional to 312,021.10, 468,031.65 and 308,910.70

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Solution

The fourth proportional to 312,021.10, 468,031.65 and 308,910.70 is: 463,366.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,021.10 : 468,031.65 = 308,910.70 : x
  2. Step 2: Convert to fraction form
    312,021.10/468,031.65 = 308,910.70/x
  3. Step 3: Cross multiply
    312,021.10x = 468,031.65 × 308,910.70
  4. Step 4: Simplify right side
    312,021.10x = 144,579,984,623.66
  5. Step 5: Solve for x
    x = 144,579,984,623.66/312,021.10
  6. Step 6: Final answer
    x = 463,366.05

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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.