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Finding the Fourth Proportional to 249,388, 344,157.27 and 136,210.75

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Solution

The fourth proportional to 249,388, 344,157.27 and 136,210.75 is: 187,971.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,388 : 344,157.27 = 136,210.75 : x
  2. Step 2: Convert to fraction form
    249,388/344,157.27 = 136,210.75/x
  3. Step 3: Cross multiply
    249,388x = 344,157.27 × 136,210.75
  4. Step 4: Simplify right side
    249,388x = 46,877,919,864.65
  5. Step 5: Solve for x
    x = 46,877,919,864.65/249,388
  6. Step 6: Final answer
    x = 187,971.83

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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.