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Finding the Fourth Proportional to 209,570.76, 289,162.80 and 124,671.24

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Solution

The fourth proportional to 209,570.76, 289,162.80 and 124,671.24 is: 172,019.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,570.76 : 289,162.80 = 124,671.24 : x
  2. Step 2: Convert to fraction form
    209,570.76/289,162.80 = 124,671.24/x
  3. Step 3: Cross multiply
    209,570.76x = 289,162.80 × 124,671.24
  4. Step 4: Simplify right side
    209,570.76x = 36,050,284,837.87
  5. Step 5: Solve for x
    x = 36,050,284,837.87/209,570.76
  6. Step 6: Final answer
    x = 172,019.63

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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.