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Finding the Fourth Proportional to 249,530.65, 344,359.42 and 139,151.88

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Solution

The fourth proportional to 249,530.65, 344,359.42 and 139,151.88 is: 192,033.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,530.65 : 344,359.42 = 139,151.88 : x
  2. Step 2: Convert to fraction form
    249,530.65/344,359.42 = 139,151.88/x
  3. Step 3: Cross multiply
    249,530.65x = 344,359.42 × 139,151.88
  4. Step 4: Simplify right side
    249,530.65x = 47,918,260,340.83
  5. Step 5: Solve for x
    x = 47,918,260,340.83/249,530.65
  6. Step 6: Final answer
    x = 192,033.57

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.