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Finding the Fourth Proportional to 303,368.60, 455,009.70 and 103,698.20

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Solution

The fourth proportional to 303,368.60, 455,009.70 and 103,698.20 is: 155,532.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,368.60 : 455,009.70 = 103,698.20 : x
  2. Step 2: Convert to fraction form
    303,368.60/455,009.70 = 103,698.20/x
  3. Step 3: Cross multiply
    303,368.60x = 455,009.70 × 103,698.20
  4. Step 4: Simplify right side
    303,368.60x = 47,183,686,872.54
  5. Step 5: Solve for x
    x = 47,183,686,872.54/303,368.60
  6. Step 6: Final answer
    x = 155,532.53

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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.