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Finding the Fourth Proportional to 535,621.38, 803,436.78 and 136,262.58

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Solution

The fourth proportional to 535,621.38, 803,436.78 and 136,262.58 is: 204,395.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    535,621.38 : 803,436.78 = 136,262.58 : x
  2. Step 2: Convert to fraction form
    535,621.38/803,436.78 = 136,262.58/x
  3. Step 3: Cross multiply
    535,621.38x = 803,436.78 × 136,262.58
  4. Step 4: Simplify right side
    535,621.38x = 109,478,368,509.69
  5. Step 5: Solve for x
    x = 109,478,368,509.69/535,621.38
  6. Step 6: Final answer
    x = 204,395.07

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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.