Home / 261,715.84-391,753.32-180,187.21

Finding the Fourth Proportional to 261,715.84, 391,753.32 and 180,187.21

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Solution

The fourth proportional to 261,715.84, 391,753.32 and 180,187.21 is: 269,715.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,715.84 : 391,753.32 = 180,187.21 : x
  2. Step 2: Convert to fraction form
    261,715.84/391,753.32 = 180,187.21/x
  3. Step 3: Cross multiply
    261,715.84x = 391,753.32 × 180,187.21
  4. Step 4: Simplify right side
    261,715.84x = 70,588,937,739.04
  5. Step 5: Solve for x
    x = 70,588,937,739.04/261,715.84
  6. Step 6: Final answer
    x = 269,715.96

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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.