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Finding the Fourth Proportional to 349,817.52, 524,981.16 and 139,515.60

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Solution

The fourth proportional to 349,817.52, 524,981.16 and 139,515.60 is: 209,375.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    349,817.52 : 524,981.16 = 139,515.60 : x
  2. Step 2: Convert to fraction form
    349,817.52/524,981.16 = 139,515.60/x
  3. Step 3: Cross multiply
    349,817.52x = 524,981.16 × 139,515.60
  4. Step 4: Simplify right side
    349,817.52x = 73,243,061,526.10
  5. Step 5: Solve for x
    x = 73,243,061,526.10/349,817.52
  6. Step 6: Final answer
    x = 209,375.05

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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.