Home / 319,430.40-479,145.60-263,443.20

Finding the Fourth Proportional to 319,430.40, 479,145.60 and 263,443.20

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Solution

The fourth proportional to 319,430.40, 479,145.60 and 263,443.20 is: 395,164.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,430.40 : 479,145.60 = 263,443.20 : x
  2. Step 2: Convert to fraction form
    319,430.40/479,145.60 = 263,443.20/x
  3. Step 3: Cross multiply
    319,430.40x = 479,145.60 × 263,443.20
  4. Step 4: Simplify right side
    319,430.40x = 126,227,650,129.92
  5. Step 5: Solve for x
    x = 126,227,650,129.92/319,430.40
  6. Step 6: Final answer
    x = 395,164.80

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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.