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Finding the Fourth Proportional to 308,610.47, 424,936.16 and 270,154.81

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Solution

The fourth proportional to 308,610.47, 424,936.16 and 270,154.81 is: 371,985.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,610.47 : 424,936.16 = 270,154.81 : x
  2. Step 2: Convert to fraction form
    308,610.47/424,936.16 = 270,154.81/x
  3. Step 3: Cross multiply
    308,610.47x = 424,936.16 × 270,154.81
  4. Step 4: Simplify right side
    308,610.47x = 114,798,547,760.41
  5. Step 5: Solve for x
    x = 114,798,547,760.41/308,610.47
  6. Step 6: Final answer
    x = 371,985.26

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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.