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Finding the Fourth Proportional to 250,428.79, 375,647.30 and 70,518.54

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Solution

The fourth proportional to 250,428.79, 375,647.30 and 70,518.54 is: 105,778.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,428.79 : 375,647.30 = 70,518.54 : x
  2. Step 2: Convert to fraction form
    250,428.79/375,647.30 = 70,518.54/x
  3. Step 3: Cross multiply
    250,428.79x = 375,647.30 × 70,518.54
  4. Step 4: Simplify right side
    250,428.79x = 26,490,097,859.23
  5. Step 5: Solve for x
    x = 26,490,097,859.23/250,428.79
  6. Step 6: Final answer
    x = 105,778.97

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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.