Home / 395,140.68-592,772.54-128,839.40

Finding the Fourth Proportional to 395,140.68, 592,772.54 and 128,839.40

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Solution

The fourth proportional to 395,140.68, 592,772.54 and 128,839.40 is: 193,279.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,140.68 : 592,772.54 = 128,839.40 : x
  2. Step 2: Convert to fraction form
    395,140.68/592,772.54 = 128,839.40/x
  3. Step 3: Cross multiply
    395,140.68x = 592,772.54 × 128,839.40
  4. Step 4: Simplify right side
    395,140.68x = 76,372,458,390.08
  5. Step 5: Solve for x
    x = 76,372,458,390.08/395,140.68
  6. Step 6: Final answer
    x = 193,279.16

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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.