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Finding the Fourth Proportional to 316,655.04, 475,002 and 139,245.60

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Solution

The fourth proportional to 316,655.04, 475,002 and 139,245.60 is: 208,876.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,655.04 : 475,002 = 139,245.60 : x
  2. Step 2: Convert to fraction form
    316,655.04/475,002 = 139,245.60/x
  3. Step 3: Cross multiply
    316,655.04x = 475,002 × 139,245.60
  4. Step 4: Simplify right side
    316,655.04x = 66,141,938,491.20
  5. Step 5: Solve for x
    x = 66,141,938,491.20/316,655.04
  6. Step 6: Final answer
    x = 208,876.95

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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.