Home / 319,140.36-440,834.40-238,427.64

Finding the Fourth Proportional to 319,140.36, 440,834.40 and 238,427.64

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Solution

The fourth proportional to 319,140.36, 440,834.40 and 238,427.64 is: 329,344.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,140.36 : 440,834.40 = 238,427.64 : x
  2. Step 2: Convert to fraction form
    319,140.36/440,834.40 = 238,427.64/x
  3. Step 3: Cross multiply
    319,140.36x = 440,834.40 × 238,427.64
  4. Step 4: Simplify right side
    319,140.36x = 105,107,105,622.82
  5. Step 5: Solve for x
    x = 105,107,105,622.82/319,140.36
  6. Step 6: Final answer
    x = 329,344.45

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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.