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Finding the Fourth Proportional to 309,980.07, 427,772.27 and 174,014.28

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Solution

The fourth proportional to 309,980.07, 427,772.27 and 174,014.28 is: 240,139.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,980.07 : 427,772.27 = 174,014.28 : x
  2. Step 2: Convert to fraction form
    309,980.07/427,772.27 = 174,014.28/x
  3. Step 3: Cross multiply
    309,980.07x = 427,772.27 × 174,014.28
  4. Step 4: Simplify right side
    309,980.07x = 74,438,483,568.02
  5. Step 5: Solve for x
    x = 74,438,483,568.02/309,980.07
  6. Step 6: Final answer
    x = 240,139.58

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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.