Home / 211,888.36-317,832.40-78,802.12

Finding the Fourth Proportional to 211,888.36, 317,832.40 and 78,802.12

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Solution

The fourth proportional to 211,888.36, 317,832.40 and 78,802.12 is: 118,203.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,888.36 : 317,832.40 = 78,802.12 : x
  2. Step 2: Convert to fraction form
    211,888.36/317,832.40 = 78,802.12/x
  3. Step 3: Cross multiply
    211,888.36x = 317,832.40 × 78,802.12
  4. Step 4: Simplify right side
    211,888.36x = 25,045,866,924.69
  5. Step 5: Solve for x
    x = 25,045,866,924.69/211,888.36
  6. Step 6: Final answer
    x = 118,203.13

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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.