Home / 427,629.60-641,271.60-147,002.40

Finding the Fourth Proportional to 427,629.60, 641,271.60 and 147,002.40

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Solution

The fourth proportional to 427,629.60, 641,271.60 and 147,002.40 is: 220,444.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,629.60 : 641,271.60 = 147,002.40 : x
  2. Step 2: Convert to fraction form
    427,629.60/641,271.60 = 147,002.40/x
  3. Step 3: Cross multiply
    427,629.60x = 641,271.60 × 147,002.40
  4. Step 4: Simplify right side
    427,629.60x = 94,268,464,251.84
  5. Step 5: Solve for x
    x = 94,268,464,251.84/427,629.60
  6. Step 6: Final answer
    x = 220,444.20

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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.