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Finding the Fourth Proportional to 305,566.40, 459,040.80 and 212,254.40

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Solution

The fourth proportional to 305,566.40, 459,040.80 and 212,254.40 is: 318,861.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,566.40 : 459,040.80 = 212,254.40 : x
  2. Step 2: Convert to fraction form
    305,566.40/459,040.80 = 212,254.40/x
  3. Step 3: Cross multiply
    305,566.40x = 459,040.80 × 212,254.40
  4. Step 4: Simplify right side
    305,566.40x = 97,433,429,579.52
  5. Step 5: Solve for x
    x = 97,433,429,579.52/305,566.40
  6. Step 6: Final answer
    x = 318,861.73

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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.