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Finding the Fourth Proportional to 448,317.71, 618,690.22 and 276,349.32

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Solution

The fourth proportional to 448,317.71, 618,690.22 and 276,349.32 is: 381,369.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,317.71 : 618,690.22 = 276,349.32 : x
  2. Step 2: Convert to fraction form
    448,317.71/618,690.22 = 276,349.32/x
  3. Step 3: Cross multiply
    448,317.71x = 618,690.22 × 276,349.32
  4. Step 4: Simplify right side
    448,317.71x = 170,974,622,244.78
  5. Step 5: Solve for x
    x = 170,974,622,244.78/448,317.71
  6. Step 6: Final answer
    x = 381,369.32

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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.