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Finding the Fourth Proportional to 454,605.16, 681,798.24 and 139,064.80

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Solution

The fourth proportional to 454,605.16, 681,798.24 and 139,064.80 is: 208,563.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    454,605.16 : 681,798.24 = 139,064.80 : x
  2. Step 2: Convert to fraction form
    454,605.16/681,798.24 = 139,064.80/x
  3. Step 3: Cross multiply
    454,605.16x = 681,798.24 × 139,064.80
  4. Step 4: Simplify right side
    454,605.16x = 94,814,135,885.95
  5. Step 5: Solve for x
    x = 94,814,135,885.95/454,605.16
  6. Step 6: Final answer
    x = 208,563.70

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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.