Home / 279,920.05-419,880.06-92,931.55

Finding the Fourth Proportional to 279,920.05, 419,880.06 and 92,931.55

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Solution

The fourth proportional to 279,920.05, 419,880.06 and 92,931.55 is: 139,397.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,920.05 : 419,880.06 = 92,931.55 : x
  2. Step 2: Convert to fraction form
    279,920.05/419,880.06 = 92,931.55/x
  3. Step 3: Cross multiply
    279,920.05x = 419,880.06 × 92,931.55
  4. Step 4: Simplify right side
    279,920.05x = 39,020,104,789.89
  5. Step 5: Solve for x
    x = 39,020,104,789.89/279,920.05
  6. Step 6: Final answer
    x = 139,397.32

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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.