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Finding the Fourth Proportional to 282,881.52, 390,365.64 and 155,549.52

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Solution

The fourth proportional to 282,881.52, 390,365.64 and 155,549.52 is: 214,652.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,881.52 : 390,365.64 = 155,549.52 : x
  2. Step 2: Convert to fraction form
    282,881.52/390,365.64 = 155,549.52/x
  3. Step 3: Cross multiply
    282,881.52x = 390,365.64 × 155,549.52
  4. Step 4: Simplify right side
    282,881.52x = 60,721,187,926.49
  5. Step 5: Solve for x
    x = 60,721,187,926.49/282,881.52
  6. Step 6: Final answer
    x = 214,652.37

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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.