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Finding the Fourth Proportional to 384,779.98, 530,995.53 and 215,014.11

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Solution

The fourth proportional to 384,779.98, 530,995.53 and 215,014.11 is: 296,719.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,779.98 : 530,995.53 = 215,014.11 : x
  2. Step 2: Convert to fraction form
    384,779.98/530,995.53 = 215,014.11/x
  3. Step 3: Cross multiply
    384,779.98x = 530,995.53 × 215,014.11
  4. Step 4: Simplify right side
    384,779.98x = 114,171,531,296.93
  5. Step 5: Solve for x
    x = 114,171,531,296.93/384,779.98
  6. Step 6: Final answer
    x = 296,719.00

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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.