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Finding the Fourth Proportional to 426,887.93, 589,128.02 and 245,627.40

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Solution

The fourth proportional to 426,887.93, 589,128.02 and 245,627.40 is: 338,978.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,887.93 : 589,128.02 = 245,627.40 : x
  2. Step 2: Convert to fraction form
    426,887.93/589,128.02 = 245,627.40/x
  3. Step 3: Cross multiply
    426,887.93x = 589,128.02 × 245,627.40
  4. Step 4: Simplify right side
    426,887.93x = 144,705,983,819.75
  5. Step 5: Solve for x
    x = 144,705,983,819.75/426,887.93
  6. Step 6: Final answer
    x = 338,978.86

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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.