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Finding the Fourth Proportional to 447,478.26, 617,547.56 and 256,520.36

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Solution

The fourth proportional to 447,478.26, 617,547.56 and 256,520.36 is: 354,013.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,478.26 : 617,547.56 = 256,520.36 : x
  2. Step 2: Convert to fraction form
    447,478.26/617,547.56 = 256,520.36/x
  3. Step 3: Cross multiply
    447,478.26x = 617,547.56 × 256,520.36
  4. Step 4: Simplify right side
    447,478.26x = 158,413,518,037.98
  5. Step 5: Solve for x
    x = 158,413,518,037.98/447,478.26
  6. Step 6: Final answer
    x = 354,013.89

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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.