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Finding the Fourth Proportional to 371,012.40, 556,825.80 and 171,639.60

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Solution

The fourth proportional to 371,012.40, 556,825.80 and 171,639.60 is: 257,601.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,012.40 : 556,825.80 = 171,639.60 : x
  2. Step 2: Convert to fraction form
    371,012.40/556,825.80 = 171,639.60/x
  3. Step 3: Cross multiply
    371,012.40x = 556,825.80 × 171,639.60
  4. Step 4: Simplify right side
    371,012.40x = 95,573,357,581.68
  5. Step 5: Solve for x
    x = 95,573,357,581.68/371,012.40
  6. Step 6: Final answer
    x = 257,601.52

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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.