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Finding the Fourth Proportional to 245,438.40, 367,639.20 and 245,438.40

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Solution

The fourth proportional to 245,438.40, 367,639.20 and 245,438.40 is: 367,639.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,438.40 : 367,639.20 = 245,438.40 : x
  2. Step 2: Convert to fraction form
    245,438.40/367,639.20 = 245,438.40/x
  3. Step 3: Cross multiply
    245,438.40x = 367,639.20 × 245,438.40
  4. Step 4: Simplify right side
    245,438.40x = 90,232,777,025.28
  5. Step 5: Solve for x
    x = 90,232,777,025.28/245,438.40
  6. Step 6: Final answer
    x = 367,639.20

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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.