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Finding the Fourth Proportional to 487,511.70, 672,800.22 and 272,671.62

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Solution

The fourth proportional to 487,511.70, 672,800.22 and 272,671.62 is: 376,305.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,511.70 : 672,800.22 = 272,671.62 : x
  2. Step 2: Convert to fraction form
    487,511.70/672,800.22 = 272,671.62/x
  3. Step 3: Cross multiply
    487,511.70x = 672,800.22 × 272,671.62
  4. Step 4: Simplify right side
    487,511.70x = 183,453,525,923.76
  5. Step 5: Solve for x
    x = 183,453,525,923.76/487,511.70
  6. Step 6: Final answer
    x = 376,305.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.