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Finding the Fourth Proportional to 311,762.63, 429,644.54 and 225,575.69

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Solution

The fourth proportional to 311,762.63, 429,644.54 and 225,575.69 is: 310,869.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,762.63 : 429,644.54 = 225,575.69 : x
  2. Step 2: Convert to fraction form
    311,762.63/429,644.54 = 225,575.69/x
  3. Step 3: Cross multiply
    311,762.63x = 429,644.54 × 225,575.69
  4. Step 4: Simplify right side
    311,762.63x = 96,917,360,289.13
  5. Step 5: Solve for x
    x = 96,917,360,289.13/311,762.63
  6. Step 6: Final answer
    x = 310,869.08

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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.