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Finding the Fourth Proportional to 286,641.78, 395,579.07 and 159,319.50

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Solution

The fourth proportional to 286,641.78, 395,579.07 and 159,319.50 is: 219,868.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,641.78 : 395,579.07 = 159,319.50 : x
  2. Step 2: Convert to fraction form
    286,641.78/395,579.07 = 159,319.50/x
  3. Step 3: Cross multiply
    286,641.78x = 395,579.07 × 159,319.50
  4. Step 4: Simplify right side
    286,641.78x = 63,023,459,642.87
  5. Step 5: Solve for x
    x = 63,023,459,642.87/286,641.78
  6. Step 6: Final answer
    x = 219,868.37

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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.