Home / 426,960.06-640,417.02-216,592.56

Finding the Fourth Proportional to 426,960.06, 640,417.02 and 216,592.56

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Solution

The fourth proportional to 426,960.06, 640,417.02 and 216,592.56 is: 324,877.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,960.06 : 640,417.02 = 216,592.56 : x
  2. Step 2: Convert to fraction form
    426,960.06/640,417.02 = 216,592.56/x
  3. Step 3: Cross multiply
    426,960.06x = 640,417.02 × 216,592.56
  4. Step 4: Simplify right side
    426,960.06x = 138,709,561,829.37
  5. Step 5: Solve for x
    x = 138,709,561,829.37/426,960.06
  6. Step 6: Final answer
    x = 324,877.14

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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.