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Finding the Fourth Proportional to 355,171.32, 532,699.47 and 130,476.51

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Solution

The fourth proportional to 355,171.32, 532,699.47 and 130,476.51 is: 195,693.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,171.32 : 532,699.47 = 130,476.51 : x
  2. Step 2: Convert to fraction form
    355,171.32/532,699.47 = 130,476.51/x
  3. Step 3: Cross multiply
    355,171.32x = 532,699.47 × 130,476.51
  4. Step 4: Simplify right side
    355,171.32x = 69,504,767,724.45
  5. Step 5: Solve for x
    x = 69,504,767,724.45/355,171.32
  6. Step 6: Final answer
    x = 195,693.64

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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.