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Finding the Fourth Proportional to 249,859.90, 344,805.58 and 135,138.66

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Solution

The fourth proportional to 249,859.90, 344,805.58 and 135,138.66 is: 186,490.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,859.90 : 344,805.58 = 135,138.66 : x
  2. Step 2: Convert to fraction form
    249,859.90/344,805.58 = 135,138.66/x
  3. Step 3: Cross multiply
    249,859.90x = 344,805.58 × 135,138.66
  4. Step 4: Simplify right side
    249,859.90x = 46,596,564,041.72
  5. Step 5: Solve for x
    x = 46,596,564,041.72/249,859.90
  6. Step 6: Final answer
    x = 186,490.77

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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.