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Finding the Fourth Proportional to 520,199.72, 780,299.58 and 146,222.72

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Solution

The fourth proportional to 520,199.72, 780,299.58 and 146,222.72 is: 219,334.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,199.72 : 780,299.58 = 146,222.72 : x
  2. Step 2: Convert to fraction form
    520,199.72/780,299.58 = 146,222.72/x
  3. Step 3: Cross multiply
    520,199.72x = 780,299.58 × 146,222.72
  4. Step 4: Simplify right side
    520,199.72x = 114,097,525,752.92
  5. Step 5: Solve for x
    x = 114,097,525,752.92/520,199.72
  6. Step 6: Final answer
    x = 219,334.08

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Similar ratio
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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.