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Finding the Fourth Proportional to 370,700.09, 556,115.72 and 139,884.11

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Solution

The fourth proportional to 370,700.09, 556,115.72 and 139,884.11 is: 209,850.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,700.09 : 556,115.72 = 139,884.11 : x
  2. Step 2: Convert to fraction form
    370,700.09/556,115.72 = 139,884.11/x
  3. Step 3: Cross multiply
    370,700.09x = 556,115.72 × 139,884.11
  4. Step 4: Simplify right side
    370,700.09x = 77,791,752,549.21
  5. Step 5: Solve for x
    x = 77,791,752,549.21/370,700.09
  6. Step 6: Final answer
    x = 209,850.91

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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.