Home / 520,121.10-780,181.65-146,144.10

Finding the Fourth Proportional to 520,121.10, 780,181.65 and 146,144.10

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Solution

The fourth proportional to 520,121.10, 780,181.65 and 146,144.10 is: 219,216.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,121.10 : 780,181.65 = 146,144.10 : x
  2. Step 2: Convert to fraction form
    520,121.10/780,181.65 = 146,144.10/x
  3. Step 3: Cross multiply
    520,121.10x = 780,181.65 × 146,144.10
  4. Step 4: Simplify right side
    520,121.10x = 114,018,945,075.77
  5. Step 5: Solve for x
    x = 114,018,945,075.77/520,121.10
  6. Step 6: Final answer
    x = 219,216.15

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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.