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Finding the Fourth Proportional to 380,653.52, 570,989.52 and 127,937.68

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Solution

The fourth proportional to 380,653.52, 570,989.52 and 127,937.68 is: 191,909.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,653.52 : 570,989.52 = 127,937.68 : x
  2. Step 2: Convert to fraction form
    380,653.52/570,989.52 = 127,937.68/x
  3. Step 3: Cross multiply
    380,653.52x = 570,989.52 × 127,937.68
  4. Step 4: Simplify right side
    380,653.52x = 73,051,074,493.11
  5. Step 5: Solve for x
    x = 73,051,074,493.11/380,653.52
  6. Step 6: Final answer
    x = 191,909.63

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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.