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Finding the Fourth Proportional to 362,740.20, 543,915.90 and 152,140.20

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Solution

The fourth proportional to 362,740.20, 543,915.90 and 152,140.20 is: 228,128.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    362,740.20 : 543,915.90 = 152,140.20 : x
  2. Step 2: Convert to fraction form
    362,740.20/543,915.90 = 152,140.20/x
  3. Step 3: Cross multiply
    362,740.20x = 543,915.90 × 152,140.20
  4. Step 4: Simplify right side
    362,740.20x = 82,751,473,809.18
  5. Step 5: Solve for x
    x = 82,751,473,809.18/362,740.20
  6. Step 6: Final answer
    x = 228,128.76

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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.