Home / 330,378.32-455,907.48-187,135.50

Finding the Fourth Proportional to 330,378.32, 455,907.48 and 187,135.50

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Solution

The fourth proportional to 330,378.32, 455,907.48 and 187,135.50 is: 258,238.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,378.32 : 455,907.48 = 187,135.50 : x
  2. Step 2: Convert to fraction form
    330,378.32/455,907.48 = 187,135.50/x
  3. Step 3: Cross multiply
    330,378.32x = 455,907.48 × 187,135.50
  4. Step 4: Simplify right side
    330,378.32x = 85,316,474,223.54
  5. Step 5: Solve for x
    x = 85,316,474,223.54/330,378.32
  6. Step 6: Final answer
    x = 258,238.72

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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.