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Finding the Fourth Proportional to 610,907.60, 916,447.80 and 190,139.60

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Solution

The fourth proportional to 610,907.60, 916,447.80 and 190,139.60 is: 285,236.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,907.60 : 916,447.80 = 190,139.60 : x
  2. Step 2: Convert to fraction form
    610,907.60/916,447.80 = 190,139.60/x
  3. Step 3: Cross multiply
    610,907.60x = 916,447.80 × 190,139.60
  4. Step 4: Simplify right side
    610,907.60x = 174,253,018,112.88
  5. Step 5: Solve for x
    x = 174,253,018,112.88/610,907.60
  6. Step 6: Final answer
    x = 285,236.29

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1.5x scale

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.