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Finding the Fourth Proportional to 340,488.68, 510,731.65 and 103,830.67

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Solution

The fourth proportional to 340,488.68, 510,731.65 and 103,830.67 is: 155,745.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,488.68 : 510,731.65 = 103,830.67 : x
  2. Step 2: Convert to fraction form
    340,488.68/510,731.65 = 103,830.67/x
  3. Step 3: Cross multiply
    340,488.68x = 510,731.65 × 103,830.67
  4. Step 4: Simplify right side
    340,488.68x = 53,029,609,409.71
  5. Step 5: Solve for x
    x = 53,029,609,409.71/340,488.68
  6. Step 6: Final answer
    x = 155,745.59

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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.