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Finding the Fourth Proportional to 380,615.63, 570,932.69 and 127,899.77

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Solution

The fourth proportional to 380,615.63, 570,932.69 and 127,899.77 is: 191,852.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,615.63 : 570,932.69 = 127,899.77 : x
  2. Step 2: Convert to fraction form
    380,615.63/570,932.69 = 127,899.77/x
  3. Step 3: Cross multiply
    380,615.63x = 570,932.69 × 127,899.77
  4. Step 4: Simplify right side
    380,615.63x = 73,022,156,242.32
  5. Step 5: Solve for x
    x = 73,022,156,242.32/380,615.63
  6. Step 6: Final answer
    x = 191,852.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.