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Finding the Fourth Proportional to 281,990.68, 423,010.95 and 79,588.59

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Solution

The fourth proportional to 281,990.68, 423,010.95 and 79,588.59 is: 119,389.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,990.68 : 423,010.95 = 79,588.59 : x
  2. Step 2: Convert to fraction form
    281,990.68/423,010.95 = 79,588.59/x
  3. Step 3: Cross multiply
    281,990.68x = 423,010.95 × 79,588.59
  4. Step 4: Simplify right side
    281,990.68x = 33,666,845,065.06
  5. Step 5: Solve for x
    x = 33,666,845,065.06/281,990.68
  6. Step 6: Final answer
    x = 119,389.92

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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.