Home / 319,176.20-478,835.22-139,290.56

Finding the Fourth Proportional to 319,176.20, 478,835.22 and 139,290.56

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Solution

The fourth proportional to 319,176.20, 478,835.22 and 139,290.56 is: 208,966.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,176.20 : 478,835.22 = 139,290.56 : x
  2. Step 2: Convert to fraction form
    319,176.20/478,835.22 = 139,290.56/x
  3. Step 3: Cross multiply
    319,176.20x = 478,835.22 × 139,290.56
  4. Step 4: Simplify right side
    319,176.20x = 66,697,225,941.52
  5. Step 5: Solve for x
    x = 66,697,225,941.52/319,176.20
  6. Step 6: Final answer
    x = 208,966.79

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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.