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Finding the Fourth Proportional to 496,486.40, 745,037.40 and 259,998.80

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Solution

The fourth proportional to 496,486.40, 745,037.40 and 259,998.80 is: 390,159.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    496,486.40 : 745,037.40 = 259,998.80 : x
  2. Step 2: Convert to fraction form
    496,486.40/745,037.40 = 259,998.80/x
  3. Step 3: Cross multiply
    496,486.40x = 745,037.40 × 259,998.80
  4. Step 4: Simplify right side
    496,486.40x = 193,708,829,955.12
  5. Step 5: Solve for x
    x = 193,708,829,955.12/496,486.40
  6. Step 6: Final answer
    x = 390,159.39

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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.