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Finding the Fourth Proportional to 448,278.71, 618,624.85 and 254,686.76

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Solution

The fourth proportional to 448,278.71, 618,624.85 and 254,686.76 is: 351,467.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,278.71 : 618,624.85 = 254,686.76 : x
  2. Step 2: Convert to fraction form
    448,278.71/618,624.85 = 254,686.76/x
  3. Step 3: Cross multiply
    448,278.71x = 618,624.85 × 254,686.76
  4. Step 4: Simplify right side
    448,278.71x = 157,555,558,701.99
  5. Step 5: Solve for x
    x = 157,555,558,701.99/448,278.71
  6. Step 6: Final answer
    x = 351,467.86

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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.