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Finding the Fourth Proportional to 353,889.76, 488,388.36 and 266,518.48

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Solution

The fourth proportional to 353,889.76, 488,388.36 and 266,518.48 is: 367,810.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,889.76 : 488,388.36 = 266,518.48 : x
  2. Step 2: Convert to fraction form
    353,889.76/488,388.36 = 266,518.48/x
  3. Step 3: Cross multiply
    353,889.76x = 488,388.36 × 266,518.48
  4. Step 4: Simplify right side
    353,889.76x = 130,164,523,356.89
  5. Step 5: Solve for x
    x = 130,164,523,356.89/353,889.76
  6. Step 6: Final answer
    x = 367,810.93

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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.