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Finding the Fourth Proportional to 309,980.36, 427,772.72 and 174,014.57

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Solution

The fourth proportional to 309,980.36, 427,772.72 and 174,014.57 is: 240,140.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,980.36 : 427,772.72 = 174,014.57 : x
  2. Step 2: Convert to fraction form
    309,980.36/427,772.72 = 174,014.57/x
  3. Step 3: Cross multiply
    309,980.36x = 427,772.72 × 174,014.57
  4. Step 4: Simplify right side
    309,980.36x = 74,438,684,224.70
  5. Step 5: Solve for x
    x = 74,438,684,224.70/309,980.36
  6. Step 6: Final answer
    x = 240,140.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.