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Finding the Fourth Proportional to 187,307.20, 280,960.80 and 124,321.60

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Solution

The fourth proportional to 187,307.20, 280,960.80 and 124,321.60 is: 186,482.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,307.20 : 280,960.80 = 124,321.60 : x
  2. Step 2: Convert to fraction form
    187,307.20/280,960.80 = 124,321.60/x
  3. Step 3: Cross multiply
    187,307.20x = 280,960.80 × 124,321.60
  4. Step 4: Simplify right side
    187,307.20x = 34,929,496,193.28
  5. Step 5: Solve for x
    x = 34,929,496,193.28/187,307.20
  6. Step 6: Final answer
    x = 186,482.40

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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.