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Finding the Fourth Proportional to 160,428.60, 220,814.10 and 151,243.20

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Solution

The fourth proportional to 160,428.60, 220,814.10 and 151,243.20 is: 208,171.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,428.60 : 220,814.10 = 151,243.20 : x
  2. Step 2: Convert to fraction form
    160,428.60/220,814.10 = 151,243.20/x
  3. Step 3: Cross multiply
    160,428.60x = 220,814.10 × 151,243.20
  4. Step 4: Simplify right side
    160,428.60x = 33,396,631,089.12
  5. Step 5: Solve for x
    x = 33,396,631,089.12/160,428.60
  6. Step 6: Final answer
    x = 208,171.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.