Home / 404,415.20-558,089.36-223,128.72

Finding the Fourth Proportional to 404,415.20, 558,089.36 and 223,128.72

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Solution

The fourth proportional to 404,415.20, 558,089.36 and 223,128.72 is: 307,915.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,415.20 : 558,089.36 = 223,128.72 : x
  2. Step 2: Convert to fraction form
    404,415.20/558,089.36 = 223,128.72/x
  3. Step 3: Cross multiply
    404,415.20x = 558,089.36 × 223,128.72
  4. Step 4: Simplify right side
    404,415.20x = 124,525,764,542.42
  5. Step 5: Solve for x
    x = 124,525,764,542.42/404,415.20
  6. Step 6: Final answer
    x = 307,915.64

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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.