Home / 378,021.10-567,031.65-312,411.10

Finding the Fourth Proportional to 378,021.10, 567,031.65 and 312,411.10

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Solution

The fourth proportional to 378,021.10, 567,031.65 and 312,411.10 is: 468,616.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,021.10 : 567,031.65 = 312,411.10 : x
  2. Step 2: Convert to fraction form
    378,021.10/567,031.65 = 312,411.10/x
  3. Step 3: Cross multiply
    378,021.10x = 567,031.65 × 312,411.10
  4. Step 4: Simplify right side
    378,021.10x = 177,146,981,511.32
  5. Step 5: Solve for x
    x = 177,146,981,511.32/378,021.10
  6. Step 6: Final answer
    x = 468,616.65

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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.