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Finding the Fourth Proportional to 163,484, 243,795.36 and 161,989.28

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Solution

The fourth proportional to 163,484, 243,795.36 and 161,989.28 is: 241,566.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,484 : 243,795.36 = 161,989.28 : x
  2. Step 2: Convert to fraction form
    163,484/243,795.36 = 161,989.28/x
  3. Step 3: Cross multiply
    163,484x = 243,795.36 × 161,989.28
  4. Step 4: Simplify right side
    163,484x = 39,492,234,833.74
  5. Step 5: Solve for x
    x = 39,492,234,833.74/163,484
  6. Step 6: Final answer
    x = 241,566.36

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.