Home / 371,428.48-512,582.88-210,280.60

Finding the Fourth Proportional to 371,428.48, 512,582.88 and 210,280.60

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Solution

The fourth proportional to 371,428.48, 512,582.88 and 210,280.60 is: 290,193.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,428.48 : 512,582.88 = 210,280.60 : x
  2. Step 2: Convert to fraction form
    371,428.48/512,582.88 = 210,280.60/x
  3. Step 3: Cross multiply
    371,428.48x = 512,582.88 × 210,280.60
  4. Step 4: Simplify right side
    371,428.48x = 107,786,235,556.13
  5. Step 5: Solve for x
    x = 107,786,235,556.13/371,428.48
  6. Step 6: Final answer
    x = 290,193.78

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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.