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Finding the Fourth Proportional to 345,456.40, 476,630.76 and 238,055.44

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Solution

The fourth proportional to 345,456.40, 476,630.76 and 238,055.44 is: 328,448.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,456.40 : 476,630.76 = 238,055.44 : x
  2. Step 2: Convert to fraction form
    345,456.40/476,630.76 = 238,055.44/x
  3. Step 3: Cross multiply
    345,456.40x = 476,630.76 × 238,055.44
  4. Step 4: Simplify right side
    345,456.40x = 113,464,545,289.33
  5. Step 5: Solve for x
    x = 113,464,545,289.33/345,456.40
  6. Step 6: Final answer
    x = 328,448.24

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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.