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Finding the Fourth Proportional to 312,246.40, 468,369.60 and 307,580.80

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Solution

The fourth proportional to 312,246.40, 468,369.60 and 307,580.80 is: 461,371.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,246.40 : 468,369.60 = 307,580.80 : x
  2. Step 2: Convert to fraction form
    312,246.40/468,369.60 = 307,580.80/x
  3. Step 3: Cross multiply
    312,246.40x = 468,369.60 × 307,580.80
  4. Step 4: Simplify right side
    312,246.40x = 144,061,496,263.68
  5. Step 5: Solve for x
    x = 144,061,496,263.68/312,246.40
  6. Step 6: Final answer
    x = 461,371.20

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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.