Home / 272,021.40-408,032.10-205,666.20

Finding the Fourth Proportional to 272,021.40, 408,032.10 and 205,666.20

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Solution

The fourth proportional to 272,021.40, 408,032.10 and 205,666.20 is: 308,499.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,021.40 : 408,032.10 = 205,666.20 : x
  2. Step 2: Convert to fraction form
    272,021.40/408,032.10 = 205,666.20/x
  3. Step 3: Cross multiply
    272,021.40x = 408,032.10 × 205,666.20
  4. Step 4: Simplify right side
    272,021.40x = 83,918,411,485.02
  5. Step 5: Solve for x
    x = 83,918,411,485.02/272,021.40
  6. Step 6: Final answer
    x = 308,499.30

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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.