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Finding the Fourth Proportional to 288,015.98, 397,484.40 and 158,979.74

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Solution

The fourth proportional to 288,015.98, 397,484.40 and 158,979.74 is: 219,404.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,015.98 : 397,484.40 = 158,979.74 : x
  2. Step 2: Convert to fraction form
    288,015.98/397,484.40 = 158,979.74/x
  3. Step 3: Cross multiply
    288,015.98x = 397,484.40 × 158,979.74
  4. Step 4: Simplify right side
    288,015.98x = 63,191,963,783.74
  5. Step 5: Solve for x
    x = 63,191,963,783.74/288,015.98
  6. Step 6: Final answer
    x = 219,404.37

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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.