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Finding the Fourth Proportional to 404,715.50, 558,507.40 and 225,867.50

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Solution

The fourth proportional to 404,715.50, 558,507.40 and 225,867.50 is: 311,697.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,715.50 : 558,507.40 = 225,867.50 : x
  2. Step 2: Convert to fraction form
    404,715.50/558,507.40 = 225,867.50/x
  3. Step 3: Cross multiply
    404,715.50x = 558,507.40 × 225,867.50
  4. Step 4: Simplify right side
    404,715.50x = 126,148,670,169.50
  5. Step 5: Solve for x
    x = 126,148,670,169.50/404,715.50
  6. Step 6: Final answer
    x = 311,697.16

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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.