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Finding the Fourth Proportional to 524,740.40, 786,851.78 and 221,079.10

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Solution

The fourth proportional to 524,740.40, 786,851.78 and 221,079.10 is: 331,509.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    524,740.40 : 786,851.78 = 221,079.10 : x
  2. Step 2: Convert to fraction form
    524,740.40/786,851.78 = 221,079.10/x
  3. Step 3: Cross multiply
    524,740.40x = 786,851.78 × 221,079.10
  4. Step 4: Simplify right side
    524,740.40x = 173,956,483,355.80
  5. Step 5: Solve for x
    x = 173,956,483,355.80/524,740.40
  6. Step 6: Final answer
    x = 331,509.61

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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.