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Finding the Fourth Proportional to 358,421.87, 494,622.30 and 197,275.77

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Solution

The fourth proportional to 358,421.87, 494,622.30 and 197,275.77 is: 272,240.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,421.87 : 494,622.30 = 197,275.77 : x
  2. Step 2: Convert to fraction form
    358,421.87/494,622.30 = 197,275.77/x
  3. Step 3: Cross multiply
    358,421.87x = 494,622.30 × 197,275.77
  4. Step 4: Simplify right side
    358,421.87x = 97,576,995,831.46
  5. Step 5: Solve for x
    x = 97,576,995,831.46/358,421.87
  6. Step 6: Final answer
    x = 272,240.63

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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.