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Finding the Fourth Proportional to 235,415.77, 324,875.81 and 127,985.87

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Solution

The fourth proportional to 235,415.77, 324,875.81 and 127,985.87 is: 176,621.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,415.77 : 324,875.81 = 127,985.87 : x
  2. Step 2: Convert to fraction form
    235,415.77/324,875.81 = 127,985.87/x
  3. Step 3: Cross multiply
    235,415.77x = 324,875.81 × 127,985.87
  4. Step 4: Simplify right side
    235,415.77x = 41,579,514,316.96
  5. Step 5: Solve for x
    x = 41,579,514,316.96/235,415.77
  6. Step 6: Final answer
    x = 176,621.62

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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.