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Finding the Fourth Proportional to 613,460.80, 920,126.40 and 192,714.40

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Solution

The fourth proportional to 613,460.80, 920,126.40 and 192,714.40 is: 289,051.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,460.80 : 920,126.40 = 192,714.40 : x
  2. Step 2: Convert to fraction form
    613,460.80/920,126.40 = 192,714.40/x
  3. Step 3: Cross multiply
    613,460.80x = 920,126.40 × 192,714.40
  4. Step 4: Simplify right side
    613,460.80x = 177,321,607,100.16
  5. Step 5: Solve for x
    x = 177,321,607,100.16/613,460.80
  6. Step 6: Final answer
    x = 289,051.24

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Similar ratio
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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.