Home / 430,021.17-645,530.03-230,730.79

Finding the Fourth Proportional to 430,021.17, 645,530.03 and 230,730.79

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Solution

The fourth proportional to 430,021.17, 645,530.03 and 230,730.79 is: 346,363.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,021.17 : 645,530.03 = 230,730.79 : x
  2. Step 2: Convert to fraction form
    430,021.17/645,530.03 = 230,730.79/x
  3. Step 3: Cross multiply
    430,021.17x = 645,530.03 × 230,730.79
  4. Step 4: Simplify right side
    430,021.17x = 148,943,653,790.62
  5. Step 5: Solve for x
    x = 148,943,653,790.62/430,021.17
  6. Step 6: Final answer
    x = 346,363.54

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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.