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Finding the Fourth Proportional to 303,766.40, 455,430.90 and 170,687.46

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Solution

The fourth proportional to 303,766.40, 455,430.90 and 170,687.46 is: 255,908.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,766.40 : 455,430.90 = 170,687.46 : x
  2. Step 2: Convert to fraction form
    303,766.40/455,430.90 = 170,687.46/x
  3. Step 3: Cross multiply
    303,766.40x = 455,430.90 × 170,687.46
  4. Step 4: Simplify right side
    303,766.40x = 77,736,343,526.51
  5. Step 5: Solve for x
    x = 77,736,343,526.51/303,766.40
  6. Step 6: Final answer
    x = 255,908.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.