Home / 430,238.48-645,356.99-204,915.51

Finding the Fourth Proportional to 430,238.48, 645,356.99 and 204,915.51

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Solution

The fourth proportional to 430,238.48, 645,356.99 and 204,915.51 is: 307,372.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,238.48 : 645,356.99 = 204,915.51 : x
  2. Step 2: Convert to fraction form
    430,238.48/645,356.99 = 204,915.51/x
  3. Step 3: Cross multiply
    430,238.48x = 645,356.99 × 204,915.51
  4. Step 4: Simplify right side
    430,238.48x = 132,243,655,713.34
  5. Step 5: Solve for x
    x = 132,243,655,713.34/430,238.48
  6. Step 6: Final answer
    x = 307,372.92

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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.