Home / 315,305.90-435,131.38-172,075.15

Finding the Fourth Proportional to 315,305.90, 435,131.38 and 172,075.15

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Solution

The fourth proportional to 315,305.90, 435,131.38 and 172,075.15 is: 237,468.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,305.90 : 435,131.38 = 172,075.15 : x
  2. Step 2: Convert to fraction form
    315,305.90/435,131.38 = 172,075.15/x
  3. Step 3: Cross multiply
    315,305.90x = 435,131.38 × 172,075.15
  4. Step 4: Simplify right side
    315,305.90x = 74,875,294,447.17
  5. Step 5: Solve for x
    x = 74,875,294,447.17/315,305.90
  6. Step 6: Final answer
    x = 237,468.74

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.