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Finding the Fourth Proportional to 286,755.08, 395,710.74 and 159,421.40

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Solution

The fourth proportional to 286,755.08, 395,710.74 and 159,421.40 is: 219,995.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,755.08 : 395,710.74 = 159,421.40 : x
  2. Step 2: Convert to fraction form
    286,755.08/395,710.74 = 159,421.40/x
  3. Step 3: Cross multiply
    286,755.08x = 395,710.74 × 159,421.40
  4. Step 4: Simplify right side
    286,755.08x = 63,084,760,165.84
  5. Step 5: Solve for x
    x = 63,084,760,165.84/286,755.08
  6. Step 6: Final answer
    x = 219,995.27

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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.