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Finding the Fourth Proportional to 303,534.55, 455,429.40 and 163,129.15

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Solution

The fourth proportional to 303,534.55, 455,429.40 and 163,129.15 is: 244,762.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,534.55 : 455,429.40 = 163,129.15 : x
  2. Step 2: Convert to fraction form
    303,534.55/455,429.40 = 163,129.15/x
  3. Step 3: Cross multiply
    303,534.55x = 455,429.40 × 163,129.15
  4. Step 4: Simplify right side
    303,534.55x = 74,293,810,907.01
  5. Step 5: Solve for x
    x = 74,293,810,907.01/303,534.55
  6. Step 6: Final answer
    x = 244,762.29

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1.5x scale

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.