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Finding the Fourth Proportional to 201,746.70, 302,620.05 and 103,442.70

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Solution

The fourth proportional to 201,746.70, 302,620.05 and 103,442.70 is: 155,164.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,746.70 : 302,620.05 = 103,442.70 : x
  2. Step 2: Convert to fraction form
    201,746.70/302,620.05 = 103,442.70/x
  3. Step 3: Cross multiply
    201,746.70x = 302,620.05 × 103,442.70
  4. Step 4: Simplify right side
    201,746.70x = 31,303,835,046.14
  5. Step 5: Solve for x
    x = 31,303,835,046.14/201,746.70
  6. Step 6: Final answer
    x = 155,164.05

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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.