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Finding the Fourth Proportional to 352,578, 485,686.10 and 300,726.18

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Solution

The fourth proportional to 352,578, 485,686.10 and 300,726.18 is: 414,258.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,578 : 485,686.10 = 300,726.18 : x
  2. Step 2: Convert to fraction form
    352,578/485,686.10 = 300,726.18/x
  3. Step 3: Cross multiply
    352,578x = 485,686.10 × 300,726.18
  4. Step 4: Simplify right side
    352,578x = 146,058,525,532.10
  5. Step 5: Solve for x
    x = 146,058,525,532.10/352,578
  6. Step 6: Final answer
    x = 414,258.76

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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.