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Finding the Fourth Proportional to 228,828.88, 315,782.98 and 128,226.88

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Solution

The fourth proportional to 228,828.88, 315,782.98 and 128,226.88 is: 176,952.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,828.88 : 315,782.98 = 128,226.88 : x
  2. Step 2: Convert to fraction form
    228,828.88/315,782.98 = 128,226.88/x
  3. Step 3: Cross multiply
    228,828.88x = 315,782.98 × 128,226.88
  4. Step 4: Simplify right side
    228,828.88x = 40,491,866,282.50
  5. Step 5: Solve for x
    x = 40,491,866,282.50/228,828.88
  6. Step 6: Final answer
    x = 176,952.60

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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.