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Finding the Fourth Proportional to 390,677.44, 539,037.60 and 227,360.80

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Solution

The fourth proportional to 390,677.44, 539,037.60 and 227,360.80 is: 313,701.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,677.44 : 539,037.60 = 227,360.80 : x
  2. Step 2: Convert to fraction form
    390,677.44/539,037.60 = 227,360.80/x
  3. Step 3: Cross multiply
    390,677.44x = 539,037.60 × 227,360.80
  4. Step 4: Simplify right side
    390,677.44x = 122,556,019,966.08
  5. Step 5: Solve for x
    x = 122,556,019,966.08/390,677.44
  6. Step 6: Final answer
    x = 313,701.30

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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.