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Finding the Fourth Proportional to 635,415.12, 953,307.15 and 256,140.12

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Solution

The fourth proportional to 635,415.12, 953,307.15 and 256,140.12 is: 384,284.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    635,415.12 : 953,307.15 = 256,140.12 : x
  2. Step 2: Convert to fraction form
    635,415.12/953,307.15 = 256,140.12/x
  3. Step 3: Cross multiply
    635,415.12x = 953,307.15 × 256,140.12
  4. Step 4: Simplify right side
    635,415.12x = 244,180,207,797.86
  5. Step 5: Solve for x
    x = 244,180,207,797.86/635,415.12
  6. Step 6: Final answer
    x = 384,284.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.