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Finding the Fourth Proportional to 225,775.55, 311,573.76 and 123,810.32

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Solution

The fourth proportional to 225,775.55, 311,573.76 and 123,810.32 is: 170,860.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,775.55 : 311,573.76 = 123,810.32 : x
  2. Step 2: Convert to fraction form
    225,775.55/311,573.76 = 123,810.32/x
  3. Step 3: Cross multiply
    225,775.55x = 311,573.76 × 123,810.32
  4. Step 4: Simplify right side
    225,775.55x = 38,576,046,929.20
  5. Step 5: Solve for x
    x = 38,576,046,929.20/225,775.55
  6. Step 6: Final answer
    x = 170,860.16

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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.