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Finding the Fourth Proportional to 524,999.40, 787,499.10 and 145,919.40

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Solution

The fourth proportional to 524,999.40, 787,499.10 and 145,919.40 is: 218,879.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    524,999.40 : 787,499.10 = 145,919.40 : x
  2. Step 2: Convert to fraction form
    524,999.40/787,499.10 = 145,919.40/x
  3. Step 3: Cross multiply
    524,999.40x = 787,499.10 × 145,919.40
  4. Step 4: Simplify right side
    524,999.40x = 114,911,396,172.54
  5. Step 5: Solve for x
    x = 114,911,396,172.54/524,999.40
  6. Step 6: Final answer
    x = 218,879.10

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Similar ratio
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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.