Home / 455,830.80-683,746.20-306,142.80

Finding the Fourth Proportional to 455,830.80, 683,746.20 and 306,142.80

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Solution

The fourth proportional to 455,830.80, 683,746.20 and 306,142.80 is: 459,214.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,830.80 : 683,746.20 = 306,142.80 : x
  2. Step 2: Convert to fraction form
    455,830.80/683,746.20 = 306,142.80/x
  3. Step 3: Cross multiply
    455,830.80x = 683,746.20 × 306,142.80
  4. Step 4: Simplify right side
    455,830.80x = 209,323,976,157.36
  5. Step 5: Solve for x
    x = 209,323,976,157.36/455,830.80
  6. Step 6: Final answer
    x = 459,214.20

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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.