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Finding the Fourth Proportional to 255,908.18, 353,153.33 and 142,730.93

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Solution

The fourth proportional to 255,908.18, 353,153.33 and 142,730.93 is: 196,968.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,908.18 : 353,153.33 = 142,730.93 : x
  2. Step 2: Convert to fraction form
    255,908.18/353,153.33 = 142,730.93/x
  3. Step 3: Cross multiply
    255,908.18x = 353,153.33 × 142,730.93
  4. Step 4: Simplify right side
    255,908.18x = 50,405,902,509.84
  5. Step 5: Solve for x
    x = 50,405,902,509.84/255,908.18
  6. Step 6: Final answer
    x = 196,968.70

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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.