Home / 320,420.33-480,657.83-83,762.63

Finding the Fourth Proportional to 320,420.33, 480,657.83 and 83,762.63

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Solution

The fourth proportional to 320,420.33, 480,657.83 and 83,762.63 is: 125,651.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,420.33 : 480,657.83 = 83,762.63 : x
  2. Step 2: Convert to fraction form
    320,420.33/480,657.83 = 83,762.63/x
  3. Step 3: Cross multiply
    320,420.33x = 480,657.83 × 83,762.63
  4. Step 4: Simplify right side
    320,420.33x = 40,261,161,148.79
  5. Step 5: Solve for x
    x = 40,261,161,148.79/320,420.33
  6. Step 6: Final answer
    x = 125,651.08

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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.