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Finding the Fourth Proportional to 371,666.95, 512,856.88 and 218,671.50

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Solution

The fourth proportional to 371,666.95, 512,856.88 and 218,671.50 is: 301,741.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,666.95 : 512,856.88 = 218,671.50 : x
  2. Step 2: Convert to fraction form
    371,666.95/512,856.88 = 218,671.50/x
  3. Step 3: Cross multiply
    371,666.95x = 512,856.88 × 218,671.50
  4. Step 4: Simplify right side
    371,666.95x = 112,147,183,234.92
  5. Step 5: Solve for x
    x = 112,147,183,234.92/371,666.95
  6. Step 6: Final answer
    x = 301,741.07

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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.