Home / 281,045.89-387,846.39-153,718.75

Finding the Fourth Proportional to 281,045.89, 387,846.39 and 153,718.75

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Solution

The fourth proportional to 281,045.89, 387,846.39 and 153,718.75 is: 212,133.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,045.89 : 387,846.39 = 153,718.75 : x
  2. Step 2: Convert to fraction form
    281,045.89/387,846.39 = 153,718.75/x
  3. Step 3: Cross multiply
    281,045.89x = 387,846.39 × 153,718.75
  4. Step 4: Simplify right side
    281,045.89x = 59,619,262,262.81
  5. Step 5: Solve for x
    x = 59,619,262,262.81/281,045.89
  6. Step 6: Final answer
    x = 212,133.55

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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.