Home / 420,152.06-629,905.02-217,530.98

Finding the Fourth Proportional to 420,152.06, 629,905.02 and 217,530.98

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Solution

The fourth proportional to 420,152.06, 629,905.02 and 217,530.98 is: 326,129.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,152.06 : 629,905.02 = 217,530.98 : x
  2. Step 2: Convert to fraction form
    420,152.06/629,905.02 = 217,530.98/x
  3. Step 3: Cross multiply
    420,152.06x = 629,905.02 × 217,530.98
  4. Step 4: Simplify right side
    420,152.06x = 137,023,856,307.52
  5. Step 5: Solve for x
    x = 137,023,856,307.52/420,152.06
  6. Step 6: Final answer
    x = 326,129.20

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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.