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Finding the Fourth Proportional to 382,391.80, 573,587.70 and 321,566.20

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Solution

The fourth proportional to 382,391.80, 573,587.70 and 321,566.20 is: 482,349.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,391.80 : 573,587.70 = 321,566.20 : x
  2. Step 2: Convert to fraction form
    382,391.80/573,587.70 = 321,566.20/x
  3. Step 3: Cross multiply
    382,391.80x = 573,587.70 × 321,566.20
  4. Step 4: Simplify right side
    382,391.80x = 184,446,417,055.74
  5. Step 5: Solve for x
    x = 184,446,417,055.74/382,391.80
  6. Step 6: Final answer
    x = 482,349.30

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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.