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Finding the Fourth Proportional to 336,006, 504,018.72 and 86,688

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Solution

The fourth proportional to 336,006, 504,018.72 and 86,688 is: 130,034.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    336,006 : 504,018.72 = 86,688 : x
  2. Step 2: Convert to fraction form
    336,006/504,018.72 = 86,688/x
  3. Step 3: Cross multiply
    336,006x = 504,018.72 × 86,688
  4. Step 4: Simplify right side
    336,006x = 43,692,374,799.36
  5. Step 5: Solve for x
    x = 43,692,374,799.36/336,006
  6. Step 6: Final answer
    x = 130,034.51

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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.