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Finding the Fourth Proportional to 448,532.64, 618,946.92 and 257,411.52

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Solution

The fourth proportional to 448,532.64, 618,946.92 and 257,411.52 is: 355,211.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,532.64 : 618,946.92 = 257,411.52 : x
  2. Step 2: Convert to fraction form
    448,532.64/618,946.92 = 257,411.52/x
  3. Step 3: Cross multiply
    448,532.64x = 618,946.92 × 257,411.52
  4. Step 4: Simplify right side
    448,532.64x = 159,324,067,476.52
  5. Step 5: Solve for x
    x = 159,324,067,476.52/448,532.64
  6. Step 6: Final answer
    x = 355,211.76

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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.