Home / 403,000.37-556,139.68-221,711.87

Finding the Fourth Proportional to 403,000.37, 556,139.68 and 221,711.87

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Solution

The fourth proportional to 403,000.37, 556,139.68 and 221,711.87 is: 305,961.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,000.37 : 556,139.68 = 221,711.87 : x
  2. Step 2: Convert to fraction form
    403,000.37/556,139.68 = 221,711.87/x
  3. Step 3: Cross multiply
    403,000.37x = 556,139.68 × 221,711.87
  4. Step 4: Simplify right side
    403,000.37x = 123,302,767,597.93
  5. Step 5: Solve for x
    x = 123,302,767,597.93/403,000.37
  6. Step 6: Final answer
    x = 305,961.92

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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.