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Finding the Fourth Proportional to 307,587.88, 425,058.03 and 221,828.32

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Solution

The fourth proportional to 307,587.88, 425,058.03 and 221,828.32 is: 306,546.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,587.88 : 425,058.03 = 221,828.32 : x
  2. Step 2: Convert to fraction form
    307,587.88/425,058.03 = 221,828.32/x
  3. Step 3: Cross multiply
    307,587.88x = 425,058.03 × 221,828.32
  4. Step 4: Simplify right side
    307,587.88x = 94,289,909,228.73
  5. Step 5: Solve for x
    x = 94,289,909,228.73/307,587.88
  6. Step 6: Final answer
    x = 306,546.24

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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.