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Finding the Fourth Proportional to 369,782.21, 554,745.24 and 142,061.24

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Solution

The fourth proportional to 369,782.21, 554,745.24 and 142,061.24 is: 213,119.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,782.21 : 554,745.24 = 142,061.24 : x
  2. Step 2: Convert to fraction form
    369,782.21/554,745.24 = 142,061.24/x
  3. Step 3: Cross multiply
    369,782.21x = 554,745.24 × 142,061.24
  4. Step 4: Simplify right side
    369,782.21x = 78,807,798,065.36
  5. Step 5: Solve for x
    x = 78,807,798,065.36/369,782.21
  6. Step 6: Final answer
    x = 213,119.49

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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.