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Finding the Fourth Proportional to 420,066.44, 630,192.56 and 120,547.88

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Solution

The fourth proportional to 420,066.44, 630,192.56 and 120,547.88 is: 180,848.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,066.44 : 630,192.56 = 120,547.88 : x
  2. Step 2: Convert to fraction form
    420,066.44/630,192.56 = 120,547.88/x
  3. Step 3: Cross multiply
    420,066.44x = 630,192.56 × 120,547.88
  4. Step 4: Simplify right side
    420,066.44x = 75,968,377,099.77
  5. Step 5: Solve for x
    x = 75,968,377,099.77/420,066.44
  6. Step 6: Final answer
    x = 180,848.48

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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.