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Finding the Fourth Proportional to 216,563.72, 298,860.06 and 121,075.64

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Solution

The fourth proportional to 216,563.72, 298,860.06 and 121,075.64 is: 167,085.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,563.72 : 298,860.06 = 121,075.64 : x
  2. Step 2: Convert to fraction form
    216,563.72/298,860.06 = 121,075.64/x
  3. Step 3: Cross multiply
    216,563.72x = 298,860.06 × 121,075.64
  4. Step 4: Simplify right side
    216,563.72x = 36,184,673,034.94
  5. Step 5: Solve for x
    x = 36,184,673,034.94/216,563.72
  6. Step 6: Final answer
    x = 167,085.57

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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.