Home / 266,146.02-399,335.94-139,756.86

Finding the Fourth Proportional to 266,146.02, 399,335.94 and 139,756.86

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Solution

The fourth proportional to 266,146.02, 399,335.94 and 139,756.86 is: 209,696.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,146.02 : 399,335.94 = 139,756.86 : x
  2. Step 2: Convert to fraction form
    266,146.02/399,335.94 = 139,756.86/x
  3. Step 3: Cross multiply
    266,146.02x = 399,335.94 × 139,756.86
  4. Step 4: Simplify right side
    266,146.02x = 55,809,937,059.55
  5. Step 5: Solve for x
    x = 55,809,937,059.55/266,146.02
  6. Step 6: Final answer
    x = 209,696.68

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1.5x scale

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.