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Finding the Fourth Proportional to 353,479.98, 529,876.98 and 140,178

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Solution

The fourth proportional to 353,479.98, 529,876.98 and 140,178 is: 210,130.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,479.98 : 529,876.98 = 140,178 : x
  2. Step 2: Convert to fraction form
    353,479.98/529,876.98 = 140,178/x
  3. Step 3: Cross multiply
    353,479.98x = 529,876.98 × 140,178
  4. Step 4: Simplify right side
    353,479.98x = 74,277,095,302.44
  5. Step 5: Solve for x
    x = 74,277,095,302.44/353,479.98
  6. Step 6: Final answer
    x = 210,130.98

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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.