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Finding the Fourth Proportional to 448,875.40, 673,313.10 and 212,679.40

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Solution

The fourth proportional to 448,875.40, 673,313.10 and 212,679.40 is: 319,019.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,875.40 : 673,313.10 = 212,679.40 : x
  2. Step 2: Convert to fraction form
    448,875.40/673,313.10 = 212,679.40/x
  3. Step 3: Cross multiply
    448,875.40x = 673,313.10 × 212,679.40
  4. Step 4: Simplify right side
    448,875.40x = 143,199,826,120.14
  5. Step 5: Solve for x
    x = 143,199,826,120.14/448,875.40
  6. Step 6: Final answer
    x = 319,019.10

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Similar ratio
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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.