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Finding the Fourth Proportional to 305,480.76, 421,529.58 and 169,510.20

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Solution

The fourth proportional to 305,480.76, 421,529.58 and 169,510.20 is: 233,905.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,480.76 : 421,529.58 = 169,510.20 : x
  2. Step 2: Convert to fraction form
    305,480.76/421,529.58 = 169,510.20/x
  3. Step 3: Cross multiply
    305,480.76x = 421,529.58 × 169,510.20
  4. Step 4: Simplify right side
    305,480.76x = 71,453,563,411.72
  5. Step 5: Solve for x
    x = 71,453,563,411.72/305,480.76
  6. Step 6: Final answer
    x = 233,905.28

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1.5x scale

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.