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Finding the Fourth Proportional to 242,686.70, 364,030.05 and 84,931.10

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Solution

The fourth proportional to 242,686.70, 364,030.05 and 84,931.10 is: 127,396.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    242,686.70 : 364,030.05 = 84,931.10 : x
  2. Step 2: Convert to fraction form
    242,686.70/364,030.05 = 84,931.10/x
  3. Step 3: Cross multiply
    242,686.70x = 364,030.05 × 84,931.10
  4. Step 4: Simplify right side
    242,686.70x = 30,917,472,579.56
  5. Step 5: Solve for x
    x = 30,917,472,579.56/242,686.70
  6. Step 6: Final answer
    x = 127,396.65

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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.