Home / 430,747.20-645,829.20-228,376.80

Finding the Fourth Proportional to 430,747.20, 645,829.20 and 228,376.80

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Solution

The fourth proportional to 430,747.20, 645,829.20 and 228,376.80 is: 342,410.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,747.20 : 645,829.20 = 228,376.80 : x
  2. Step 2: Convert to fraction form
    430,747.20/645,829.20 = 228,376.80/x
  3. Step 3: Cross multiply
    430,747.20x = 645,829.20 × 228,376.80
  4. Step 4: Simplify right side
    430,747.20x = 147,492,406,042.56
  5. Step 5: Solve for x
    x = 147,492,406,042.56/430,747.20
  6. Step 6: Final answer
    x = 342,410.60

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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.