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Finding the Fourth Proportional to 309,090.79, 463,636.19 and 168,772.87

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Solution

The fourth proportional to 309,090.79, 463,636.19 and 168,772.87 is: 253,159.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,090.79 : 463,636.19 = 168,772.87 : x
  2. Step 2: Convert to fraction form
    309,090.79/463,636.19 = 168,772.87/x
  3. Step 3: Cross multiply
    309,090.79x = 463,636.19 × 168,772.87
  4. Step 4: Simplify right side
    309,090.79x = 78,249,210,422.17
  5. Step 5: Solve for x
    x = 78,249,210,422.17/309,090.79
  6. Step 6: Final answer
    x = 253,159.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.