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Finding the Fourth Proportional to 349,770.30, 524,871.45 and 139,386.30

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Solution

The fourth proportional to 349,770.30, 524,871.45 and 139,386.30 is: 209,165.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    349,770.30 : 524,871.45 = 139,386.30 : x
  2. Step 2: Convert to fraction form
    349,770.30/524,871.45 = 139,386.30/x
  3. Step 3: Cross multiply
    349,770.30x = 524,871.45 × 139,386.30
  4. Step 4: Simplify right side
    349,770.30x = 73,159,889,391.14
  5. Step 5: Solve for x
    x = 73,159,889,391.14/349,770.30
  6. Step 6: Final answer
    x = 209,165.53

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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.