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Finding the Fourth Proportional to 368,717.39, 553,076.09 and 210,835.10

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Solution

The fourth proportional to 368,717.39, 553,076.09 and 210,835.10 is: 316,252.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,717.39 : 553,076.09 = 210,835.10 : x
  2. Step 2: Convert to fraction form
    368,717.39/553,076.09 = 210,835.10/x
  3. Step 3: Cross multiply
    368,717.39x = 553,076.09 × 210,835.10
  4. Step 4: Simplify right side
    368,717.39x = 116,607,852,742.76
  5. Step 5: Solve for x
    x = 116,607,852,742.76/368,717.39
  6. Step 6: Final answer
    x = 316,252.65

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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.