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Finding the Fourth Proportional to 234,616.64, 323,656.79 and 139,055.67

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Solution

The fourth proportional to 234,616.64, 323,656.79 and 139,055.67 is: 191,829.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    234,616.64 : 323,656.79 = 139,055.67 : x
  2. Step 2: Convert to fraction form
    234,616.64/323,656.79 = 139,055.67/x
  3. Step 3: Cross multiply
    234,616.64x = 323,656.79 × 139,055.67
  4. Step 4: Simplify right side
    234,616.64x = 45,006,311,088.22
  5. Step 5: Solve for x
    x = 45,006,311,088.22/234,616.64
  6. Step 6: Final answer
    x = 191,829.16

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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.