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Finding the Fourth Proportional to 492,054.30, 737,980.65 and 136,979.10

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Solution

The fourth proportional to 492,054.30, 737,980.65 and 136,979.10 is: 205,440.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,054.30 : 737,980.65 = 136,979.10 : x
  2. Step 2: Convert to fraction form
    492,054.30/737,980.65 = 136,979.10/x
  3. Step 3: Cross multiply
    492,054.30x = 737,980.65 × 136,979.10
  4. Step 4: Simplify right side
    492,054.30x = 101,087,925,254.42
  5. Step 5: Solve for x
    x = 101,087,925,254.42/492,054.30
  6. Step 6: Final answer
    x = 205,440.59

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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.