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Finding the Fourth Proportional to 374,010.30, 561,015.45 and 121,290.30

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Solution

The fourth proportional to 374,010.30, 561,015.45 and 121,290.30 is: 181,935.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,010.30 : 561,015.45 = 121,290.30 : x
  2. Step 2: Convert to fraction form
    374,010.30/561,015.45 = 121,290.30/x
  3. Step 3: Cross multiply
    374,010.30x = 561,015.45 × 121,290.30
  4. Step 4: Simplify right side
    374,010.30x = 68,045,732,235.14
  5. Step 5: Solve for x
    x = 68,045,732,235.14/374,010.30
  6. Step 6: Final answer
    x = 181,935.45

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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.