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Finding the Fourth Proportional to 371,448.47, 557,145.45 and 118,661.07

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Solution

The fourth proportional to 371,448.47, 557,145.45 and 118,661.07 is: 177,982.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,448.47 : 557,145.45 = 118,661.07 : x
  2. Step 2: Convert to fraction form
    371,448.47/557,145.45 = 118,661.07/x
  3. Step 3: Cross multiply
    371,448.47x = 557,145.45 × 118,661.07
  4. Step 4: Simplify right side
    371,448.47x = 66,111,477,331.93
  5. Step 5: Solve for x
    x = 66,111,477,331.93/371,448.47
  6. Step 6: Final answer
    x = 177,982.90

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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.