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Finding the Fourth Proportional to 464,074.26, 640,371.12 and 257,337.45

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Solution

The fourth proportional to 464,074.26, 640,371.12 and 257,337.45 is: 355,097.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    464,074.26 : 640,371.12 = 257,337.45 : x
  2. Step 2: Convert to fraction form
    464,074.26/640,371.12 = 257,337.45/x
  3. Step 3: Cross multiply
    464,074.26x = 640,371.12 × 257,337.45
  4. Step 4: Simplify right side
    464,074.26x = 164,791,471,074.44
  5. Step 5: Solve for x
    x = 164,791,471,074.44/464,074.26
  6. Step 6: Final answer
    x = 355,097.20

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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.