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Finding the Fourth Proportional to 450,136.80, 675,205.20 and 117,712.80

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Solution

The fourth proportional to 450,136.80, 675,205.20 and 117,712.80 is: 176,569.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    450,136.80 : 675,205.20 = 117,712.80 : x
  2. Step 2: Convert to fraction form
    450,136.80/675,205.20 = 117,712.80/x
  3. Step 3: Cross multiply
    450,136.80x = 675,205.20 × 117,712.80
  4. Step 4: Simplify right side
    450,136.80x = 79,480,294,666.56
  5. Step 5: Solve for x
    x = 79,480,294,666.56/450,136.80
  6. Step 6: Final answer
    x = 176,569.20

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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.