Home / 315,446.90-435,316.29-202,269.38

Finding the Fourth Proportional to 315,446.90, 435,316.29 and 202,269.38

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Solution

The fourth proportional to 315,446.90, 435,316.29 and 202,269.38 is: 279,131.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,446.90 : 435,316.29 = 202,269.38 : x
  2. Step 2: Convert to fraction form
    315,446.90/435,316.29 = 202,269.38/x
  3. Step 3: Cross multiply
    315,446.90x = 435,316.29 × 202,269.38
  4. Step 4: Simplify right side
    315,446.90x = 88,051,153,905.62
  5. Step 5: Solve for x
    x = 88,051,153,905.62/315,446.90
  6. Step 6: Final answer
    x = 279,131.46

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1.5x scale

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.