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Finding the Fourth Proportional to 498,333.50, 687,651.81 and 283,430.78

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Solution

The fourth proportional to 498,333.50, 687,651.81 and 283,430.78 is: 391,106.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,333.50 : 687,651.81 = 283,430.78 : x
  2. Step 2: Convert to fraction form
    498,333.50/687,651.81 = 283,430.78/x
  3. Step 3: Cross multiply
    498,333.50x = 687,651.81 × 283,430.78
  4. Step 4: Simplify right side
    498,333.50x = 194,901,685,438.45
  5. Step 5: Solve for x
    x = 194,901,685,438.45/498,333.50
  6. Step 6: Final answer
    x = 391,106.93

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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.