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Finding the Fourth Proportional to 395,039.40, 592,040.70 and 158,188.20

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Solution

The fourth proportional to 395,039.40, 592,040.70 and 158,188.20 is: 237,074.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,039.40 : 592,040.70 = 158,188.20 : x
  2. Step 2: Convert to fraction form
    395,039.40/592,040.70 = 158,188.20/x
  3. Step 3: Cross multiply
    395,039.40x = 592,040.70 × 158,188.20
  4. Step 4: Simplify right side
    395,039.40x = 93,653,852,659.74
  5. Step 5: Solve for x
    x = 93,653,852,659.74/395,039.40
  6. Step 6: Final answer
    x = 237,074.71

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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.