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Finding the Fourth Proportional to 249,187.92, 343,878.12 and 136,010.40

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Solution

The fourth proportional to 249,187.92, 343,878.12 and 136,010.40 is: 187,693.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,187.92 : 343,878.12 = 136,010.40 : x
  2. Step 2: Convert to fraction form
    249,187.92/343,878.12 = 136,010.40/x
  3. Step 3: Cross multiply
    249,187.92x = 343,878.12 × 136,010.40
  4. Step 4: Simplify right side
    249,187.92x = 46,771,000,652.45
  5. Step 5: Solve for x
    x = 46,771,000,652.45/249,187.92
  6. Step 6: Final answer
    x = 187,693.69

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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.