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Finding the Fourth Proportional to 516,477.21, 774,760.41 and 142,500.21

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Solution

The fourth proportional to 516,477.21, 774,760.41 and 142,500.21 is: 213,762.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,477.21 : 774,760.41 = 142,500.21 : x
  2. Step 2: Convert to fraction form
    516,477.21/774,760.41 = 142,500.21/x
  3. Step 3: Cross multiply
    516,477.21x = 774,760.41 × 142,500.21
  4. Step 4: Simplify right side
    516,477.21x = 110,403,521,124.69
  5. Step 5: Solve for x
    x = 110,403,521,124.69/516,477.21
  6. Step 6: Final answer
    x = 213,762.62

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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.