Home / 390,024.75-538,234.16-211,176.75

Finding the Fourth Proportional to 390,024.75, 538,234.16 and 211,176.75

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Solution

The fourth proportional to 390,024.75, 538,234.16 and 211,176.75 is: 291,423.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,024.75 : 538,234.16 = 211,176.75 : x
  2. Step 2: Convert to fraction form
    390,024.75/538,234.16 = 211,176.75/x
  3. Step 3: Cross multiply
    390,024.75x = 538,234.16 × 211,176.75
  4. Step 4: Simplify right side
    390,024.75x = 113,662,539,591.90
  5. Step 5: Solve for x
    x = 113,662,539,591.90/390,024.75
  6. Step 6: Final answer
    x = 291,423.92

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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.