Home / 430,320.66-644,890.47-272,266.17

Finding the Fourth Proportional to 430,320.66, 644,890.47 and 272,266.17

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Solution

The fourth proportional to 430,320.66, 644,890.47 and 272,266.17 is: 408,025.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,320.66 : 644,890.47 = 272,266.17 : x
  2. Step 2: Convert to fraction form
    430,320.66/644,890.47 = 272,266.17/x
  3. Step 3: Cross multiply
    430,320.66x = 644,890.47 × 272,266.17
  4. Step 4: Simplify right side
    430,320.66x = 175,581,858,336.40
  5. Step 5: Solve for x
    x = 175,581,858,336.40/430,320.66
  6. Step 6: Final answer
    x = 408,025.63

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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.