Home / 383,028.95-528,560.81-210,961.78

Finding the Fourth Proportional to 383,028.95, 528,560.81 and 210,961.78

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Solution

The fourth proportional to 383,028.95, 528,560.81 and 210,961.78 is: 291,116.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,028.95 : 528,560.81 = 210,961.78 : x
  2. Step 2: Convert to fraction form
    383,028.95/528,560.81 = 210,961.78/x
  3. Step 3: Cross multiply
    383,028.95x = 528,560.81 × 210,961.78
  4. Step 4: Simplify right side
    383,028.95x = 111,506,130,703.89
  5. Step 5: Solve for x
    x = 111,506,130,703.89/383,028.95
  6. Step 6: Final answer
    x = 291,116.72

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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.