Home / 212,200.07-318,300.17-54,428.51

Finding the Fourth Proportional to 212,200.07, 318,300.17 and 54,428.51

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Solution

The fourth proportional to 212,200.07, 318,300.17 and 54,428.51 is: 81,642.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,200.07 : 318,300.17 = 54,428.51 : x
  2. Step 2: Convert to fraction form
    212,200.07/318,300.17 = 54,428.51/x
  3. Step 3: Cross multiply
    212,200.07x = 318,300.17 × 54,428.51
  4. Step 4: Simplify right side
    212,200.07x = 17,324,604,509.45
  5. Step 5: Solve for x
    x = 17,324,604,509.45/212,200.07
  6. Step 6: Final answer
    x = 81,642.79

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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.