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Finding the Fourth Proportional to 371,171.76, 556,485 and 118,306.80

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Solution

The fourth proportional to 371,171.76, 556,485 and 118,306.80 is: 177,373.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,171.76 : 556,485 = 118,306.80 : x
  2. Step 2: Convert to fraction form
    371,171.76/556,485 = 118,306.80/x
  3. Step 3: Cross multiply
    371,171.76x = 556,485 × 118,306.80
  4. Step 4: Simplify right side
    371,171.76x = 65,835,959,598
  5. Step 5: Solve for x
    x = 65,835,959,598/371,171.76
  6. Step 6: Final answer
    x = 177,373.30

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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.