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Finding the Fourth Proportional to 412,948.95, 618,900.93 and 235,555.71

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Solution

The fourth proportional to 412,948.95, 618,900.93 and 235,555.71 is: 353,035.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,948.95 : 618,900.93 = 235,555.71 : x
  2. Step 2: Convert to fraction form
    412,948.95/618,900.93 = 235,555.71/x
  3. Step 3: Cross multiply
    412,948.95x = 618,900.93 × 235,555.71
  4. Step 4: Simplify right side
    412,948.95x = 145,785,647,985.81
  5. Step 5: Solve for x
    x = 145,785,647,985.81/412,948.95
  6. Step 6: Final answer
    x = 353,035.52

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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.