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Finding the Fourth Proportional to 483,338.61, 666,919.35 and 279,314.76

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Solution

The fourth proportional to 483,338.61, 666,919.35 and 279,314.76 is: 385,403.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,338.61 : 666,919.35 = 279,314.76 : x
  2. Step 2: Convert to fraction form
    483,338.61/666,919.35 = 279,314.76/x
  3. Step 3: Cross multiply
    483,338.61x = 666,919.35 × 279,314.76
  4. Step 4: Simplify right side
    483,338.61x = 186,280,418,184.61
  5. Step 5: Solve for x
    x = 186,280,418,184.61/483,338.61
  6. Step 6: Final answer
    x = 385,403.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.