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Finding the Fourth Proportional to 303,465.90, 455,259.60 and 90,233.40

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Solution

The fourth proportional to 303,465.90, 455,259.60 and 90,233.40 is: 135,368.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,465.90 : 455,259.60 = 90,233.40 : x
  2. Step 2: Convert to fraction form
    303,465.90/455,259.60 = 90,233.40/x
  3. Step 3: Cross multiply
    303,465.90x = 455,259.60 × 90,233.40
  4. Step 4: Simplify right side
    303,465.90x = 41,079,621,590.64
  5. Step 5: Solve for x
    x = 41,079,621,590.64/303,465.90
  6. Step 6: Final answer
    x = 135,368.16

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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.