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Finding the Fourth Proportional to 270,168.16, 405,368.88 and 145,484.32

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Solution

The fourth proportional to 270,168.16, 405,368.88 and 145,484.32 is: 218,289.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,168.16 : 405,368.88 = 145,484.32 : x
  2. Step 2: Convert to fraction form
    270,168.16/405,368.88 = 145,484.32/x
  3. Step 3: Cross multiply
    270,168.16x = 405,368.88 × 145,484.32
  4. Step 4: Simplify right side
    270,168.16x = 58,974,815,855.96
  5. Step 5: Solve for x
    x = 58,974,815,855.96/270,168.16
  6. Step 6: Final answer
    x = 218,289.29

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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.