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Finding the Fourth Proportional to 228,080.17, 342,430.52 and 128,310.58

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Solution

The fourth proportional to 228,080.17, 342,430.52 and 128,310.58 is: 192,640.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,080.17 : 342,430.52 = 128,310.58 : x
  2. Step 2: Convert to fraction form
    228,080.17/342,430.52 = 128,310.58/x
  3. Step 3: Cross multiply
    228,080.17x = 342,430.52 × 128,310.58
  4. Step 4: Simplify right side
    228,080.17x = 43,937,459,139.13
  5. Step 5: Solve for x
    x = 43,937,459,139.13/228,080.17
  6. Step 6: Final answer
    x = 192,640.42

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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.