Home / 380,685.16-525,345.78-210,922.12

Finding the Fourth Proportional to 380,685.16, 525,345.78 and 210,922.12

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Solution

The fourth proportional to 380,685.16, 525,345.78 and 210,922.12 is: 291,072.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,685.16 : 525,345.78 = 210,922.12 : x
  2. Step 2: Convert to fraction form
    380,685.16/525,345.78 = 210,922.12/x
  3. Step 3: Cross multiply
    380,685.16x = 525,345.78 × 210,922.12
  4. Step 4: Simplify right side
    380,685.16x = 110,807,045,650.65
  5. Step 5: Solve for x
    x = 110,807,045,650.65/380,685.16
  6. Step 6: Final answer
    x = 291,072.67

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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.