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Finding the Fourth Proportional to 358,507.78, 538,093.98 and 181,139.45

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Solution

The fourth proportional to 358,507.78, 538,093.98 and 181,139.45 is: 271,877.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,507.78 : 538,093.98 = 181,139.45 : x
  2. Step 2: Convert to fraction form
    358,507.78/538,093.98 = 181,139.45/x
  3. Step 3: Cross multiply
    358,507.78x = 538,093.98 × 181,139.45
  4. Step 4: Simplify right side
    358,507.78x = 97,470,047,585.51
  5. Step 5: Solve for x
    x = 97,470,047,585.51/358,507.78
  6. Step 6: Final answer
    x = 271,877.08

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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.