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Finding the Fourth Proportional to 340,336.98, 510,505.47 and 91,012.50

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Solution

The fourth proportional to 340,336.98, 510,505.47 and 91,012.50 is: 136,518.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,336.98 : 510,505.47 = 91,012.50 : x
  2. Step 2: Convert to fraction form
    340,336.98/510,505.47 = 91,012.50/x
  3. Step 3: Cross multiply
    340,336.98x = 510,505.47 × 91,012.50
  4. Step 4: Simplify right side
    340,336.98x = 46,462,379,088.38
  5. Step 5: Solve for x
    x = 46,462,379,088.38/340,336.98
  6. Step 6: Final answer
    x = 136,518.75

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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.