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Finding the Fourth Proportional to 291,303.42, 401,768.55 and 190,681.98

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Solution

The fourth proportional to 291,303.42, 401,768.55 and 190,681.98 is: 262,990.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,303.42 : 401,768.55 = 190,681.98 : x
  2. Step 2: Convert to fraction form
    291,303.42/401,768.55 = 190,681.98/x
  3. Step 3: Cross multiply
    291,303.42x = 401,768.55 × 190,681.98
  4. Step 4: Simplify right side
    291,303.42x = 76,610,022,615.73
  5. Step 5: Solve for x
    x = 76,610,022,615.73/291,303.42
  6. Step 6: Final answer
    x = 262,990.47

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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.