Home / 395,184.08-592,478-128,785.52

Finding the Fourth Proportional to 395,184.08, 592,478 and 128,785.52

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Solution

The fourth proportional to 395,184.08, 592,478 and 128,785.52 is: 193,081.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,184.08 : 592,478 = 128,785.52 : x
  2. Step 2: Convert to fraction form
    395,184.08/592,478 = 128,785.52/x
  3. Step 3: Cross multiply
    395,184.08x = 592,478 × 128,785.52
  4. Step 4: Simplify right side
    395,184.08x = 76,302,587,318.56
  5. Step 5: Solve for x
    x = 76,302,587,318.56/395,184.08
  6. Step 6: Final answer
    x = 193,081.13

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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.