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Finding the Fourth Proportional to 357,927.30, 536,878.58 and 91,690.43

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Solution

The fourth proportional to 357,927.30, 536,878.58 and 91,690.43 is: 137,532.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,927.30 : 536,878.58 = 91,690.43 : x
  2. Step 2: Convert to fraction form
    357,927.30/536,878.58 = 91,690.43/x
  3. Step 3: Cross multiply
    357,927.30x = 536,878.58 × 91,690.43
  4. Step 4: Simplify right side
    357,927.30x = 49,226,624,715.14
  5. Step 5: Solve for x
    x = 49,226,624,715.14/357,927.30
  6. Step 6: Final answer
    x = 137,532.47

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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.