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Finding the Fourth Proportional to 489,136.80, 732,830.40 and 301,929.60

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Solution

The fourth proportional to 489,136.80, 732,830.40 and 301,929.60 is: 452,354.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,136.80 : 732,830.40 = 301,929.60 : x
  2. Step 2: Convert to fraction form
    489,136.80/732,830.40 = 301,929.60/x
  3. Step 3: Cross multiply
    489,136.80x = 732,830.40 × 301,929.60
  4. Step 4: Simplify right side
    489,136.80x = 221,263,189,539.84
  5. Step 5: Solve for x
    x = 221,263,189,539.84/489,136.80
  6. Step 6: Final answer
    x = 452,354.41

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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.