Home / 221,329.61-305,385.27-130,636.94

Finding the Fourth Proportional to 221,329.61, 305,385.27 and 130,636.94

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Solution

The fourth proportional to 221,329.61, 305,385.27 and 130,636.94 is: 180,249.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,329.61 : 305,385.27 = 130,636.94 : x
  2. Step 2: Convert to fraction form
    221,329.61/305,385.27 = 130,636.94/x
  3. Step 3: Cross multiply
    221,329.61x = 305,385.27 × 130,636.94
  4. Step 4: Simplify right side
    221,329.61x = 39,894,595,666.95
  5. Step 5: Solve for x
    x = 39,894,595,666.95/221,329.61
  6. Step 6: Final answer
    x = 180,249.70

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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.