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Finding the Fourth Proportional to 452,373.12, 678,360.42 and 212,555.25

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Solution

The fourth proportional to 452,373.12, 678,360.42 and 212,555.25 is: 318,739.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    452,373.12 : 678,360.42 = 212,555.25 : x
  2. Step 2: Convert to fraction form
    452,373.12/678,360.42 = 212,555.25/x
  3. Step 3: Cross multiply
    452,373.12x = 678,360.42 × 212,555.25
  4. Step 4: Simplify right side
    452,373.12x = 144,189,068,663.21
  5. Step 5: Solve for x
    x = 144,189,068,663.21/452,373.12
  6. Step 6: Final answer
    x = 318,739.25

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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.