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Finding the Fourth Proportional to 535,785.70, 803,678.55 and 161,760.10

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Solution

The fourth proportional to 535,785.70, 803,678.55 and 161,760.10 is: 242,640.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    535,785.70 : 803,678.55 = 161,760.10 : x
  2. Step 2: Convert to fraction form
    535,785.70/803,678.55 = 161,760.10/x
  3. Step 3: Cross multiply
    535,785.70x = 803,678.55 × 161,760.10
  4. Step 4: Simplify right side
    535,785.70x = 130,003,122,615.86
  5. Step 5: Solve for x
    x = 130,003,122,615.86/535,785.70
  6. Step 6: Final answer
    x = 242,640.15

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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.