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Finding the Fourth Proportional to 648,840.70, 973,261.05 and 228,159.10

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Solution

The fourth proportional to 648,840.70, 973,261.05 and 228,159.10 is: 342,238.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,840.70 : 973,261.05 = 228,159.10 : x
  2. Step 2: Convert to fraction form
    648,840.70/973,261.05 = 228,159.10/x
  3. Step 3: Cross multiply
    648,840.70x = 973,261.05 × 228,159.10
  4. Step 4: Simplify right side
    648,840.70x = 222,058,365,233.06
  5. Step 5: Solve for x
    x = 222,058,365,233.06/648,840.70
  6. Step 6: Final answer
    x = 342,238.65

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Double scale
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Similar ratio
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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.