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Finding the Fourth Proportional to 386,420.83, 533,151.72 and 250,460.51

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Solution

The fourth proportional to 386,420.83, 533,151.72 and 250,460.51 is: 345,564.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,420.83 : 533,151.72 = 250,460.51 : x
  2. Step 2: Convert to fraction form
    386,420.83/533,151.72 = 250,460.51/x
  3. Step 3: Cross multiply
    386,420.83x = 533,151.72 × 250,460.51
  4. Step 4: Simplify right side
    386,420.83x = 133,533,449,032.82
  5. Step 5: Solve for x
    x = 133,533,449,032.82/386,420.83
  6. Step 6: Final answer
    x = 345,564.83

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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.