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Finding the Fourth Proportional to 243,516.91, 335,835.72 and 152,881.32

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Solution

The fourth proportional to 243,516.91, 335,835.72 and 152,881.32 is: 210,839.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,516.91 : 335,835.72 = 152,881.32 : x
  2. Step 2: Convert to fraction form
    243,516.91/335,835.72 = 152,881.32/x
  3. Step 3: Cross multiply
    243,516.91x = 335,835.72 × 152,881.32
  4. Step 4: Simplify right side
    243,516.91x = 51,343,009,436.13
  5. Step 5: Solve for x
    x = 51,343,009,436.13/243,516.91
  6. Step 6: Final answer
    x = 210,839.61

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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.