Home / 355,619.20-533,428.80-187,074.40

Finding the Fourth Proportional to 355,619.20, 533,428.80 and 187,074.40

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Solution

The fourth proportional to 355,619.20, 533,428.80 and 187,074.40 is: 280,611.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,619.20 : 533,428.80 = 187,074.40 : x
  2. Step 2: Convert to fraction form
    355,619.20/533,428.80 = 187,074.40/x
  3. Step 3: Cross multiply
    355,619.20x = 533,428.80 × 187,074.40
  4. Step 4: Simplify right side
    355,619.20x = 99,790,872,702.72
  5. Step 5: Solve for x
    x = 99,790,872,702.72/355,619.20
  6. Step 6: Final answer
    x = 280,611.60

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1.5x scale

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.