Home / 385,193.18-531,591.18-215,428.52

Finding the Fourth Proportional to 385,193.18, 531,591.18 and 215,428.52

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Solution

The fourth proportional to 385,193.18, 531,591.18 and 215,428.52 is: 297,305.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,193.18 : 531,591.18 = 215,428.52 : x
  2. Step 2: Convert to fraction form
    385,193.18/531,591.18 = 215,428.52/x
  3. Step 3: Cross multiply
    385,193.18x = 531,591.18 × 215,428.52
  4. Step 4: Simplify right side
    385,193.18x = 114,519,901,152.45
  5. Step 5: Solve for x
    x = 114,519,901,152.45/385,193.18
  6. Step 6: Final answer
    x = 297,305.11

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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.