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Finding the Fourth Proportional to 390,676.94, 539,036.96 and 227,360.24

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Solution

The fourth proportional to 390,676.94, 539,036.96 and 227,360.24 is: 313,700.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,676.94 : 539,036.96 = 227,360.24 : x
  2. Step 2: Convert to fraction form
    390,676.94/539,036.96 = 227,360.24/x
  3. Step 3: Cross multiply
    390,676.94x = 539,036.96 × 227,360.24
  4. Step 4: Simplify right side
    390,676.94x = 122,555,572,594.47
  5. Step 5: Solve for x
    x = 122,555,572,594.47/390,676.94
  6. Step 6: Final answer
    x = 313,700.55

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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.