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Finding the Fourth Proportional to 309,810.80, 464,716.20 and 275,985.20

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Solution

The fourth proportional to 309,810.80, 464,716.20 and 275,985.20 is: 413,977.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,810.80 : 464,716.20 = 275,985.20 : x
  2. Step 2: Convert to fraction form
    309,810.80/464,716.20 = 275,985.20/x
  3. Step 3: Cross multiply
    309,810.80x = 464,716.20 × 275,985.20
  4. Step 4: Simplify right side
    309,810.80x = 128,254,793,400.24
  5. Step 5: Solve for x
    x = 128,254,793,400.24/309,810.80
  6. Step 6: Final answer
    x = 413,977.80

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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.