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Finding the Fourth Proportional to 307,454.40, 424,222.56 and 186,659.28

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Solution

The fourth proportional to 307,454.40, 424,222.56 and 186,659.28 is: 257,550.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,454.40 : 424,222.56 = 186,659.28 : x
  2. Step 2: Convert to fraction form
    307,454.40/424,222.56 = 186,659.28/x
  3. Step 3: Cross multiply
    307,454.40x = 424,222.56 × 186,659.28
  4. Step 4: Simplify right side
    307,454.40x = 79,185,077,609.36
  5. Step 5: Solve for x
    x = 79,185,077,609.36/307,454.40
  6. Step 6: Final answer
    x = 257,550.64

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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.