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Finding the Fourth Proportional to 520,248.78, 780,435.63 and 183,219.75

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Solution

The fourth proportional to 520,248.78, 780,435.63 and 183,219.75 is: 274,851.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,248.78 : 780,435.63 = 183,219.75 : x
  2. Step 2: Convert to fraction form
    520,248.78/780,435.63 = 183,219.75/x
  3. Step 3: Cross multiply
    520,248.78x = 780,435.63 × 183,219.75
  4. Step 4: Simplify right side
    520,248.78x = 142,991,221,019.69
  5. Step 5: Solve for x
    x = 142,991,221,019.69/520,248.78
  6. Step 6: Final answer
    x = 274,851.62

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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.