Home / 287,961.80-431,748.30-153,048.20

Finding the Fourth Proportional to 287,961.80, 431,748.30 and 153,048.20

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Solution

The fourth proportional to 287,961.80, 431,748.30 and 153,048.20 is: 229,468.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,961.80 : 431,748.30 = 153,048.20 : x
  2. Step 2: Convert to fraction form
    287,961.80/431,748.30 = 153,048.20/x
  3. Step 3: Cross multiply
    287,961.80x = 431,748.30 × 153,048.20
  4. Step 4: Simplify right side
    287,961.80x = 66,078,300,168.06
  5. Step 5: Solve for x
    x = 66,078,300,168.06/287,961.80
  6. Step 6: Final answer
    x = 229,468.98

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.