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Finding the Fourth Proportional to 486,246.80, 729,024.60 and 186,611.60

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Solution

The fourth proportional to 486,246.80, 729,024.60 and 186,611.60 is: 279,784.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,246.80 : 729,024.60 = 186,611.60 : x
  2. Step 2: Convert to fraction form
    486,246.80/729,024.60 = 186,611.60/x
  3. Step 3: Cross multiply
    486,246.80x = 729,024.60 × 186,611.60
  4. Step 4: Simplify right side
    486,246.80x = 136,044,447,045.36
  5. Step 5: Solve for x
    x = 136,044,447,045.36/486,246.80
  6. Step 6: Final answer
    x = 279,784.77

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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.