Home / 214,307.08-321,416.70-81,141.40

Finding the Fourth Proportional to 214,307.08, 321,416.70 and 81,141.40

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Solution

The fourth proportional to 214,307.08, 321,416.70 and 81,141.40 is: 121,695.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,307.08 : 321,416.70 = 81,141.40 : x
  2. Step 2: Convert to fraction form
    214,307.08/321,416.70 = 81,141.40/x
  3. Step 3: Cross multiply
    214,307.08x = 321,416.70 × 81,141.40
  4. Step 4: Simplify right side
    214,307.08x = 26,080,201,021.38
  5. Step 5: Solve for x
    x = 26,080,201,021.38/214,307.08
  6. Step 6: Final answer
    x = 121,695.47

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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.