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Finding the Fourth Proportional to 307,708.40, 460,756.80 and 247,416.40

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Solution

The fourth proportional to 307,708.40, 460,756.80 and 247,416.40 is: 370,476.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,708.40 : 460,756.80 = 247,416.40 : x
  2. Step 2: Convert to fraction form
    307,708.40/460,756.80 = 247,416.40/x
  3. Step 3: Cross multiply
    307,708.40x = 460,756.80 × 247,416.40
  4. Step 4: Simplify right side
    307,708.40x = 113,998,788,731.52
  5. Step 5: Solve for x
    x = 113,998,788,731.52/307,708.40
  6. Step 6: Final answer
    x = 370,476.69

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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.