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Finding the Fourth Proportional to 243,355.40, 335,840.01 and 141,379.64

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Solution

The fourth proportional to 243,355.40, 335,840.01 and 141,379.64 is: 195,109.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,355.40 : 335,840.01 = 141,379.64 : x
  2. Step 2: Convert to fraction form
    243,355.40/335,840.01 = 141,379.64/x
  3. Step 3: Cross multiply
    243,355.40x = 335,840.01 × 141,379.64
  4. Step 4: Simplify right side
    243,355.40x = 47,480,939,711.40
  5. Step 5: Solve for x
    x = 47,480,939,711.40/243,355.40
  6. Step 6: Final answer
    x = 195,109.46

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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.