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Finding the Fourth Proportional to 249,006.92, 343,658.22 and 138,636.68

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Solution

The fourth proportional to 249,006.92, 343,658.22 and 138,636.68 is: 191,334.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,006.92 : 343,658.22 = 138,636.68 : x
  2. Step 2: Convert to fraction form
    249,006.92/343,658.22 = 138,636.68/x
  3. Step 3: Cross multiply
    249,006.92x = 343,658.22 × 138,636.68
  4. Step 4: Simplify right side
    249,006.92x = 47,643,634,675.51
  5. Step 5: Solve for x
    x = 47,643,634,675.51/249,006.92
  6. Step 6: Final answer
    x = 191,334.58

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1.5x scale

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.