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Finding the Fourth Proportional to 288,015.48, 397,483.71 and 158,979.24

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Solution

The fourth proportional to 288,015.48, 397,483.71 and 158,979.24 is: 219,403.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,015.48 : 397,483.71 = 158,979.24 : x
  2. Step 2: Convert to fraction form
    288,015.48/397,483.71 = 158,979.24/x
  3. Step 3: Cross multiply
    288,015.48x = 397,483.71 × 158,979.24
  4. Step 4: Simplify right side
    288,015.48x = 63,191,655,345.87
  5. Step 5: Solve for x
    x = 63,191,655,345.87/288,015.48
  6. Step 6: Final answer
    x = 219,403.68

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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.