Home / 426,943.80-640,428.66-146,457

Finding the Fourth Proportional to 426,943.80, 640,428.66 and 146,457

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Solution

The fourth proportional to 426,943.80, 640,428.66 and 146,457 is: 219,689.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,943.80 : 640,428.66 = 146,457 : x
  2. Step 2: Convert to fraction form
    426,943.80/640,428.66 = 146,457/x
  3. Step 3: Cross multiply
    426,943.80x = 640,428.66 × 146,457
  4. Step 4: Simplify right side
    426,943.80x = 93,795,260,257.62
  5. Step 5: Solve for x
    x = 93,795,260,257.62/426,943.80
  6. Step 6: Final answer
    x = 219,689.95

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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.