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Finding the Fourth Proportional to 318,312, 477,366.56 and 105,040.17

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Solution

The fourth proportional to 318,312, 477,366.56 and 105,040.17 is: 157,526.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,312 : 477,366.56 = 105,040.17 : x
  2. Step 2: Convert to fraction form
    318,312/477,366.56 = 105,040.17/x
  3. Step 3: Cross multiply
    318,312x = 477,366.56 × 105,040.17
  4. Step 4: Simplify right side
    318,312x = 50,142,664,089.51
  5. Step 5: Solve for x
    x = 50,142,664,089.51/318,312
  6. Step 6: Final answer
    x = 157,526.78

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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.