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Finding the Fourth Proportional to 287,859.52, 397,236.40 and 158,803.12

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Solution

The fourth proportional to 287,859.52, 397,236.40 and 158,803.12 is: 219,142.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,859.52 : 397,236.40 = 158,803.12 : x
  2. Step 2: Convert to fraction form
    287,859.52/397,236.40 = 158,803.12/x
  3. Step 3: Cross multiply
    287,859.52x = 397,236.40 × 158,803.12
  4. Step 4: Simplify right side
    287,859.52x = 63,082,379,697.57
  5. Step 5: Solve for x
    x = 63,082,379,697.57/287,859.52
  6. Step 6: Final answer
    x = 219,142.93

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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.