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Finding the Fourth Proportional to 318,402.50, 439,402.28 and 175,162.50

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Solution

The fourth proportional to 318,402.50, 439,402.28 and 175,162.50 is: 241,728.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,402.50 : 439,402.28 = 175,162.50 : x
  2. Step 2: Convert to fraction form
    318,402.50/439,402.28 = 175,162.50/x
  3. Step 3: Cross multiply
    318,402.50x = 439,402.28 × 175,162.50
  4. Step 4: Simplify right side
    318,402.50x = 76,966,800,994.69
  5. Step 5: Solve for x
    x = 76,966,800,994.69/318,402.50
  6. Step 6: Final answer
    x = 241,728.01

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.