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Finding the Fourth Proportional to 249,564.78, 344,398.64 and 136,387.53

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Solution

The fourth proportional to 249,564.78, 344,398.64 and 136,387.53 is: 188,214.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,564.78 : 344,398.64 = 136,387.53 : x
  2. Step 2: Convert to fraction form
    249,564.78/344,398.64 = 136,387.53/x
  3. Step 3: Cross multiply
    249,564.78x = 344,398.64 × 136,387.53
  4. Step 4: Simplify right side
    249,564.78x = 46,971,679,163.02
  5. Step 5: Solve for x
    x = 46,971,679,163.02/249,564.78
  6. Step 6: Final answer
    x = 188,214.38

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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.