Home / 289,018.18-398,981.46-217,425.52

Finding the Fourth Proportional to 289,018.18, 398,981.46 and 217,425.52

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Solution

The fourth proportional to 289,018.18, 398,981.46 and 217,425.52 is: 300,149.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,018.18 : 398,981.46 = 217,425.52 : x
  2. Step 2: Convert to fraction form
    289,018.18/398,981.46 = 217,425.52/x
  3. Step 3: Cross multiply
    289,018.18x = 398,981.46 × 217,425.52
  4. Step 4: Simplify right side
    289,018.18x = 86,748,751,410.86
  5. Step 5: Solve for x
    x = 86,748,751,410.86/289,018.18
  6. Step 6: Final answer
    x = 300,149.81

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1.5x scale

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.