Home / 457,217.28-631,178.64-304,509.60

Finding the Fourth Proportional to 457,217.28, 631,178.64 and 304,509.60

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Solution

The fourth proportional to 457,217.28, 631,178.64 and 304,509.60 is: 420,368.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,217.28 : 631,178.64 = 304,509.60 : x
  2. Step 2: Convert to fraction form
    457,217.28/631,178.64 = 304,509.60/x
  3. Step 3: Cross multiply
    457,217.28x = 631,178.64 × 304,509.60
  4. Step 4: Simplify right side
    457,217.28x = 192,199,955,194.94
  5. Step 5: Solve for x
    x = 192,199,955,194.94/457,217.28
  6. Step 6: Final answer
    x = 420,368.97

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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.