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Finding the Fourth Proportional to 370,290.77, 554,487.42 and 256,280.63

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Solution

The fourth proportional to 370,290.77, 554,487.42 and 256,280.63 is: 383,764.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,290.77 : 554,487.42 = 256,280.63 : x
  2. Step 2: Convert to fraction form
    370,290.77/554,487.42 = 256,280.63/x
  3. Step 3: Cross multiply
    370,290.77x = 554,487.42 × 256,280.63
  4. Step 4: Simplify right side
    370,290.77x = 142,104,388,191.78
  5. Step 5: Solve for x
    x = 142,104,388,191.78/370,290.77
  6. Step 6: Final answer
    x = 383,764.33

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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.