Home / 430,205.80-645,308.70-262,244.20

Finding the Fourth Proportional to 430,205.80, 645,308.70 and 262,244.20

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Solution

The fourth proportional to 430,205.80, 645,308.70 and 262,244.20 is: 393,366.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,205.80 : 645,308.70 = 262,244.20 : x
  2. Step 2: Convert to fraction form
    430,205.80/645,308.70 = 262,244.20/x
  3. Step 3: Cross multiply
    430,205.80x = 645,308.70 × 262,244.20
  4. Step 4: Simplify right side
    430,205.80x = 169,228,463,784.54
  5. Step 5: Solve for x
    x = 169,228,463,784.54/430,205.80
  6. Step 6: Final answer
    x = 393,366.30

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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.