Home / 312,865.28-432,110.46-212,088.32

Finding the Fourth Proportional to 312,865.28, 432,110.46 and 212,088.32

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Solution

The fourth proportional to 312,865.28, 432,110.46 and 212,088.32 is: 292,923.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,865.28 : 432,110.46 = 212,088.32 : x
  2. Step 2: Convert to fraction form
    312,865.28/432,110.46 = 212,088.32/x
  3. Step 3: Cross multiply
    312,865.28x = 432,110.46 × 212,088.32
  4. Step 4: Simplify right side
    312,865.28x = 91,645,581,515.83
  5. Step 5: Solve for x
    x = 91,645,581,515.83/312,865.28
  6. Step 6: Final answer
    x = 292,923.46

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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.