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Finding the Fourth Proportional to 286,820.80, 395,802.72 and 159,493.60

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Solution

The fourth proportional to 286,820.80, 395,802.72 and 159,493.60 is: 220,095.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,820.80 : 395,802.72 = 159,493.60 : x
  2. Step 2: Convert to fraction form
    286,820.80/395,802.72 = 159,493.60/x
  3. Step 3: Cross multiply
    286,820.80x = 395,802.72 × 159,493.60
  4. Step 4: Simplify right side
    286,820.80x = 63,128,000,702.59
  5. Step 5: Solve for x
    x = 63,128,000,702.59/286,820.80
  6. Step 6: Final answer
    x = 220,095.62

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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.