Home / 312,888.03-432,141.86-212,111.07

Finding the Fourth Proportional to 312,888.03, 432,141.86 and 212,111.07

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Solution

The fourth proportional to 312,888.03, 432,141.86 and 212,111.07 is: 292,954.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,888.03 : 432,141.86 = 212,111.07 : x
  2. Step 2: Convert to fraction form
    312,888.03/432,141.86 = 212,111.07/x
  3. Step 3: Cross multiply
    312,888.03x = 432,141.86 × 212,111.07
  4. Step 4: Simplify right side
    312,888.03x = 91,662,071,255.83
  5. Step 5: Solve for x
    x = 91,662,071,255.83/312,888.03
  6. Step 6: Final answer
    x = 292,954.87

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1.5x scale

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.