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Finding the Fourth Proportional to 223,511.10, 335,266.65 and 139,530.30

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Solution

The fourth proportional to 223,511.10, 335,266.65 and 139,530.30 is: 209,295.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,511.10 : 335,266.65 = 139,530.30 : x
  2. Step 2: Convert to fraction form
    223,511.10/335,266.65 = 139,530.30/x
  3. Step 3: Cross multiply
    223,511.10x = 335,266.65 × 139,530.30
  4. Step 4: Simplify right side
    223,511.10x = 46,779,856,254.50
  5. Step 5: Solve for x
    x = 46,779,856,254.50/223,511.10
  6. Step 6: Final answer
    x = 209,295.45

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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.