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Finding the Fourth Proportional to 147,321.40, 221,058.90 and 64,223.80

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Solution

The fourth proportional to 147,321.40, 221,058.90 and 64,223.80 is: 96,369.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,321.40 : 221,058.90 = 64,223.80 : x
  2. Step 2: Convert to fraction form
    147,321.40/221,058.90 = 64,223.80/x
  3. Step 3: Cross multiply
    147,321.40x = 221,058.90 × 64,223.80
  4. Step 4: Simplify right side
    147,321.40x = 14,197,242,581.82
  5. Step 5: Solve for x
    x = 14,197,242,581.82/147,321.40
  6. Step 6: Final answer
    x = 96,369.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.