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Finding the Fourth Proportional to 286,732.85, 395,692.88 and 157,679.65

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Solution

The fourth proportional to 286,732.85, 395,692.88 and 157,679.65 is: 217,598.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,732.85 : 395,692.88 = 157,679.65 : x
  2. Step 2: Convert to fraction form
    286,732.85/395,692.88 = 157,679.65/x
  3. Step 3: Cross multiply
    286,732.85x = 395,692.88 × 157,679.65
  4. Step 4: Simplify right side
    286,732.85x = 62,392,713,048.26
  5. Step 5: Solve for x
    x = 62,392,713,048.26/286,732.85
  6. Step 6: Final answer
    x = 217,598.76

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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.