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Finding the Fourth Proportional to 535,963.20, 803,944.80 and 136,603.20

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Solution

The fourth proportional to 535,963.20, 803,944.80 and 136,603.20 is: 204,904.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    535,963.20 : 803,944.80 = 136,603.20 : x
  2. Step 2: Convert to fraction form
    535,963.20/803,944.80 = 136,603.20/x
  3. Step 3: Cross multiply
    535,963.20x = 803,944.80 × 136,603.20
  4. Step 4: Simplify right side
    535,963.20x = 109,821,432,303.36
  5. Step 5: Solve for x
    x = 109,821,432,303.36/535,963.20
  6. Step 6: Final answer
    x = 204,904.80

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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.