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Finding the Fourth Proportional to 163,471.50, 243,776.70 and 161,976.78

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Solution

The fourth proportional to 163,471.50, 243,776.70 and 161,976.78 is: 241,547.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,471.50 : 243,776.70 = 161,976.78 : x
  2. Step 2: Convert to fraction form
    163,471.50/243,776.70 = 161,976.78/x
  3. Step 3: Cross multiply
    163,471.50x = 243,776.70 × 161,976.78
  4. Step 4: Simplify right side
    163,471.50x = 39,486,164,905.03
  5. Step 5: Solve for x
    x = 39,486,164,905.03/163,471.50
  6. Step 6: Final answer
    x = 241,547.70

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1.5x scale

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.