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Finding the Fourth Proportional to 210,440.10, 315,660.12 and 77,262.72

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Solution

The fourth proportional to 210,440.10, 315,660.12 and 77,262.72 is: 115,894.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,440.10 : 315,660.12 = 77,262.72 : x
  2. Step 2: Convert to fraction form
    210,440.10/315,660.12 = 77,262.72/x
  3. Step 3: Cross multiply
    210,440.10x = 315,660.12 × 77,262.72
  4. Step 4: Simplify right side
    210,440.10x = 24,388,759,466.73
  5. Step 5: Solve for x
    x = 24,388,759,466.73/210,440.10
  6. Step 6: Final answer
    x = 115,894.07

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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.