Home / 319,104.05-440,476.37-285,053.40

Finding the Fourth Proportional to 319,104.05, 440,476.37 and 285,053.40

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Solution

The fourth proportional to 319,104.05, 440,476.37 and 285,053.40 is: 393,474.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,104.05 : 440,476.37 = 285,053.40 : x
  2. Step 2: Convert to fraction form
    319,104.05/440,476.37 = 285,053.40/x
  3. Step 3: Cross multiply
    319,104.05x = 440,476.37 × 285,053.40
  4. Step 4: Simplify right side
    319,104.05x = 125,559,285,462.89
  5. Step 5: Solve for x
    x = 125,559,285,462.89/319,104.05
  6. Step 6: Final answer
    x = 393,474.44

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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.