Home / 395,140.18-592,771.79-128,838.90

Finding the Fourth Proportional to 395,140.18, 592,771.79 and 128,838.90

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Solution

The fourth proportional to 395,140.18, 592,771.79 and 128,838.90 is: 193,278.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,140.18 : 592,771.79 = 128,838.90 : x
  2. Step 2: Convert to fraction form
    395,140.18/592,771.79 = 128,838.90/x
  3. Step 3: Cross multiply
    395,140.18x = 592,771.79 × 128,838.90
  4. Step 4: Simplify right side
    395,140.18x = 76,372,065,374.63
  5. Step 5: Solve for x
    x = 76,372,065,374.63/395,140.18
  6. Step 6: Final answer
    x = 193,278.41

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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.