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Finding the Fourth Proportional to 370,816.30, 520,323.80 and 370,816.30

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Solution

The fourth proportional to 370,816.30, 520,323.80 and 370,816.30 is: 520,323.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,816.30 : 520,323.80 = 370,816.30 : x
  2. Step 2: Convert to fraction form
    370,816.30/520,323.80 = 370,816.30/x
  3. Step 3: Cross multiply
    370,816.30x = 520,323.80 × 370,816.30
  4. Step 4: Simplify right side
    370,816.30x = 192,944,546,317.94
  5. Step 5: Solve for x
    x = 192,944,546,317.94/370,816.30
  6. Step 6: Final answer
    x = 520,323.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.