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Finding the Fourth Proportional to 253,478.80, 380,218.20 and 153,751.60

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Solution

The fourth proportional to 253,478.80, 380,218.20 and 153,751.60 is: 230,627.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,478.80 : 380,218.20 = 153,751.60 : x
  2. Step 2: Convert to fraction form
    253,478.80/380,218.20 = 153,751.60/x
  3. Step 3: Cross multiply
    253,478.80x = 380,218.20 × 153,751.60
  4. Step 4: Simplify right side
    253,478.80x = 58,459,156,599.12
  5. Step 5: Solve for x
    x = 58,459,156,599.12/253,478.80
  6. Step 6: Final answer
    x = 230,627.40

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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.