Home / 318,523.24-439,025.70-217,746.28

Finding the Fourth Proportional to 318,523.24, 439,025.70 and 217,746.28

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Solution

The fourth proportional to 318,523.24, 439,025.70 and 217,746.28 is: 300,123.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,523.24 : 439,025.70 = 217,746.28 : x
  2. Step 2: Convert to fraction form
    318,523.24/439,025.70 = 217,746.28/x
  3. Step 3: Cross multiply
    318,523.24x = 439,025.70 × 217,746.28
  4. Step 4: Simplify right side
    318,523.24x = 95,596,212,999.40
  5. Step 5: Solve for x
    x = 95,596,212,999.40/318,523.24
  6. Step 6: Final answer
    x = 300,123.20

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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.