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Finding the Fourth Proportional to 524,480.40, 786,660.12 and 145,429.20

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Solution

The fourth proportional to 524,480.40, 786,660.12 and 145,429.20 is: 218,127.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    524,480.40 : 786,660.12 = 145,429.20 : x
  2. Step 2: Convert to fraction form
    524,480.40/786,660.12 = 145,429.20/x
  3. Step 3: Cross multiply
    524,480.40x = 786,660.12 × 145,429.20
  4. Step 4: Simplify right side
    524,480.40x = 114,403,351,923.50
  5. Step 5: Solve for x
    x = 114,403,351,923.50/524,480.40
  6. Step 6: Final answer
    x = 218,127.03

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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.