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Finding the Fourth Proportional to 370,698.47, 556,113.29 and 139,882.49

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Solution

The fourth proportional to 370,698.47, 556,113.29 and 139,882.49 is: 209,848.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,698.47 : 556,113.29 = 139,882.49 : x
  2. Step 2: Convert to fraction form
    370,698.47/556,113.29 = 139,882.49/x
  3. Step 3: Cross multiply
    370,698.47x = 556,113.29 × 139,882.49
  4. Step 4: Simplify right side
    370,698.47x = 77,790,508,247.31
  5. Step 5: Solve for x
    x = 77,790,508,247.31/370,698.47
  6. Step 6: Final answer
    x = 209,848.48

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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.