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Finding the Fourth Proportional to 290,573.47, 400,998.79 and 159,749.52

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Solution

The fourth proportional to 290,573.47, 400,998.79 and 159,749.52 is: 220,458.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,573.47 : 400,998.79 = 159,749.52 : x
  2. Step 2: Convert to fraction form
    290,573.47/400,998.79 = 159,749.52/x
  3. Step 3: Cross multiply
    290,573.47x = 400,998.79 × 159,749.52
  4. Step 4: Simplify right side
    290,573.47x = 64,059,362,919.02
  5. Step 5: Solve for x
    x = 64,059,362,919.02/290,573.47
  6. Step 6: Final answer
    x = 220,458.40

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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.