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Finding the Fourth Proportional to 281,655.23, 422,483.67 and 81,980.51

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Solution

The fourth proportional to 281,655.23, 422,483.67 and 81,980.51 is: 122,971.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,655.23 : 422,483.67 = 81,980.51 : x
  2. Step 2: Convert to fraction form
    281,655.23/422,483.67 = 81,980.51/x
  3. Step 3: Cross multiply
    281,655.23x = 422,483.67 × 81,980.51
  4. Step 4: Simplify right side
    281,655.23x = 34,635,426,733.27
  5. Step 5: Solve for x
    x = 34,635,426,733.27/281,655.23
  6. Step 6: Final answer
    x = 122,971.01

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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.