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Finding the Fourth Proportional to 338,988.54, 508,482.32 and 139,168.16

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Solution

The fourth proportional to 338,988.54, 508,482.32 and 139,168.16 is: 208,752.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,988.54 : 508,482.32 = 139,168.16 : x
  2. Step 2: Convert to fraction form
    338,988.54/508,482.32 = 139,168.16/x
  3. Step 3: Cross multiply
    338,988.54x = 508,482.32 × 139,168.16
  4. Step 4: Simplify right side
    338,988.54x = 70,764,545,628.68
  5. Step 5: Solve for x
    x = 70,764,545,628.68/338,988.54
  6. Step 6: Final answer
    x = 208,752.03

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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.