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Finding the Fourth Proportional to 482,815.60, 724,223.40 and 258,866.80

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Solution

The fourth proportional to 482,815.60, 724,223.40 and 258,866.80 is: 388,300.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,815.60 : 724,223.40 = 258,866.80 : x
  2. Step 2: Convert to fraction form
    482,815.60/724,223.40 = 258,866.80/x
  3. Step 3: Cross multiply
    482,815.60x = 724,223.40 × 258,866.80
  4. Step 4: Simplify right side
    482,815.60x = 187,477,394,043.12
  5. Step 5: Solve for x
    x = 187,477,394,043.12/482,815.60
  6. Step 6: Final answer
    x = 388,300.20

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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.