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Finding the Fourth Proportional to 489,130.80, 732,821.40 and 301,923.60

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Solution

The fourth proportional to 489,130.80, 732,821.40 and 301,923.60 is: 452,345.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,130.80 : 732,821.40 = 301,923.60 : x
  2. Step 2: Convert to fraction form
    489,130.80/732,821.40 = 301,923.60/x
  3. Step 3: Cross multiply
    489,130.80x = 732,821.40 × 301,923.60
  4. Step 4: Simplify right side
    489,130.80x = 221,256,075,245.04
  5. Step 5: Solve for x
    x = 221,256,075,245.04/489,130.80
  6. Step 6: Final answer
    x = 452,345.42

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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.