Home / 403,003.67-556,145.10-221,711.72

Finding the Fourth Proportional to 403,003.67, 556,145.10 and 221,711.72

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Solution

The fourth proportional to 403,003.67, 556,145.10 and 221,711.72 is: 305,962.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,003.67 : 556,145.10 = 221,711.72 : x
  2. Step 2: Convert to fraction form
    403,003.67/556,145.10 = 221,711.72/x
  3. Step 3: Cross multiply
    403,003.67x = 556,145.10 × 221,711.72
  4. Step 4: Simplify right side
    403,003.67x = 123,303,883,909.85
  5. Step 5: Solve for x
    x = 123,303,883,909.85/403,003.67
  6. Step 6: Final answer
    x = 305,962.19

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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.