Home / 430,310.64-644,875.47-272,256.15

Finding the Fourth Proportional to 430,310.64, 644,875.47 and 272,256.15

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Solution

The fourth proportional to 430,310.64, 644,875.47 and 272,256.15 is: 408,010.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,310.64 : 644,875.47 = 272,256.15 : x
  2. Step 2: Convert to fraction form
    430,310.64/644,875.47 = 272,256.15/x
  3. Step 3: Cross multiply
    430,310.64x = 644,875.47 × 272,256.15
  4. Step 4: Simplify right side
    430,310.64x = 175,571,315,109.92
  5. Step 5: Solve for x
    x = 175,571,315,109.92/430,310.64
  6. Step 6: Final answer
    x = 408,010.63

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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.