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Finding the Fourth Proportional to 499,901.90, 689,862.75 and 270,458.45

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Solution

The fourth proportional to 499,901.90, 689,862.75 and 270,458.45 is: 373,231.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,901.90 : 689,862.75 = 270,458.45 : x
  2. Step 2: Convert to fraction form
    499,901.90/689,862.75 = 270,458.45/x
  3. Step 3: Cross multiply
    499,901.90x = 689,862.75 × 270,458.45
  4. Step 4: Simplify right side
    499,901.90x = 186,579,206,628.42
  5. Step 5: Solve for x
    x = 186,579,206,628.42/499,901.90
  6. Step 6: Final answer
    x = 373,231.65

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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.