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Finding the Fourth Proportional to 211,779.88, 317,576.54 and 99,492.01

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Solution

The fourth proportional to 211,779.88, 317,576.54 and 99,492.01 is: 149,194.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,779.88 : 317,576.54 = 99,492.01 : x
  2. Step 2: Convert to fraction form
    211,779.88/317,576.54 = 99,492.01/x
  3. Step 3: Cross multiply
    211,779.88x = 317,576.54 × 99,492.01
  4. Step 4: Simplify right side
    211,779.88x = 31,596,327,748.23
  5. Step 5: Solve for x
    x = 31,596,327,748.23/211,779.88
  6. Step 6: Final answer
    x = 149,194.19

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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.