Home / 211,323.13-317,109.08-78,296.13

Finding the Fourth Proportional to 211,323.13, 317,109.08 and 78,296.13

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Solution

The fourth proportional to 211,323.13, 317,109.08 and 78,296.13 is: 117,490.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,323.13 : 317,109.08 = 78,296.13 : x
  2. Step 2: Convert to fraction form
    211,323.13/317,109.08 = 78,296.13/x
  3. Step 3: Cross multiply
    211,323.13x = 317,109.08 × 78,296.13
  4. Step 4: Simplify right side
    211,323.13x = 24,828,413,947.60
  5. Step 5: Solve for x
    x = 24,828,413,947.60/211,323.13
  6. Step 6: Final answer
    x = 117,490.28

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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.