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Finding the Fourth Proportional to 503,897.80, 756,138.30 and 188,386.60

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Solution

The fourth proportional to 503,897.80, 756,138.30 and 188,386.60 is: 282,688.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    503,897.80 : 756,138.30 = 188,386.60 : x
  2. Step 2: Convert to fraction form
    503,897.80/756,138.30 = 188,386.60/x
  3. Step 3: Cross multiply
    503,897.80x = 756,138.30 × 188,386.60
  4. Step 4: Simplify right side
    503,897.80x = 142,446,323,466.78
  5. Step 5: Solve for x
    x = 142,446,323,466.78/503,897.80
  6. Step 6: Final answer
    x = 282,688.92

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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.