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Finding the Fourth Proportional to 288,368.85, 397,947.70 and 159,307.36

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Solution

The fourth proportional to 288,368.85, 397,947.70 and 159,307.36 is: 219,843.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,368.85 : 397,947.70 = 159,307.36 : x
  2. Step 2: Convert to fraction form
    288,368.85/397,947.70 = 159,307.36/x
  3. Step 3: Cross multiply
    288,368.85x = 397,947.70 × 159,307.36
  4. Step 4: Simplify right side
    288,368.85x = 63,395,997,505.07
  5. Step 5: Solve for x
    x = 63,395,997,505.07/288,368.85
  6. Step 6: Final answer
    x = 219,843.43

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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.