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Finding the Fourth Proportional to 382,021.20, 573,031.80 and 340,686.90

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Solution

The fourth proportional to 382,021.20, 573,031.80 and 340,686.90 is: 511,030.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,021.20 : 573,031.80 = 340,686.90 : x
  2. Step 2: Convert to fraction form
    382,021.20/573,031.80 = 340,686.90/x
  3. Step 3: Cross multiply
    382,021.20x = 573,031.80 × 340,686.90
  4. Step 4: Simplify right side
    382,021.20x = 195,224,427,543.42
  5. Step 5: Solve for x
    x = 195,224,427,543.42/382,021.20
  6. Step 6: Final answer
    x = 511,030.35

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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.