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Finding the Fourth Proportional to 307,360.10, 461,040.15 and 212,881.70

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Solution

The fourth proportional to 307,360.10, 461,040.15 and 212,881.70 is: 319,322.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,360.10 : 461,040.15 = 212,881.70 : x
  2. Step 2: Convert to fraction form
    307,360.10/461,040.15 = 212,881.70/x
  3. Step 3: Cross multiply
    307,360.10x = 461,040.15 × 212,881.70
  4. Step 4: Simplify right side
    307,360.10x = 98,147,010,900.26
  5. Step 5: Solve for x
    x = 98,147,010,900.26/307,360.10
  6. Step 6: Final answer
    x = 319,322.55

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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.