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Finding the Fourth Proportional to 423,355, 584,208.74 and 251,280.44

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Solution

The fourth proportional to 423,355, 584,208.74 and 251,280.44 is: 346,754.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,355 : 584,208.74 = 251,280.44 : x
  2. Step 2: Convert to fraction form
    423,355/584,208.74 = 251,280.44/x
  3. Step 3: Cross multiply
    423,355x = 584,208.74 × 251,280.44
  4. Step 4: Simplify right side
    423,355x = 146,800,229,239.05
  5. Step 5: Solve for x
    x = 146,800,229,239.05/423,355
  6. Step 6: Final answer
    x = 346,754.45

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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.