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Finding the Fourth Proportional to 370,722.80, 556,084.20 and 331,356.80

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Solution

The fourth proportional to 370,722.80, 556,084.20 and 331,356.80 is: 497,035.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,722.80 : 556,084.20 = 331,356.80 : x
  2. Step 2: Convert to fraction form
    370,722.80/556,084.20 = 331,356.80/x
  3. Step 3: Cross multiply
    370,722.80x = 556,084.20 × 331,356.80
  4. Step 4: Simplify right side
    370,722.80x = 184,262,281,042.56
  5. Step 5: Solve for x
    x = 184,262,281,042.56/370,722.80
  6. Step 6: Final answer
    x = 497,035.20

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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.