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Finding the Fourth Proportional to 349,727.60, 524,245.80 and 139,084.40

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Solution

The fourth proportional to 349,727.60, 524,245.80 and 139,084.40 is: 208,489.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    349,727.60 : 524,245.80 = 139,084.40 : x
  2. Step 2: Convert to fraction form
    349,727.60/524,245.80 = 139,084.40/x
  3. Step 3: Cross multiply
    349,727.60x = 524,245.80 × 139,084.40
  4. Step 4: Simplify right side
    349,727.60x = 72,914,412,545.52
  5. Step 5: Solve for x
    x = 72,914,412,545.52/349,727.60
  6. Step 6: Final answer
    x = 208,489.16

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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.