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Finding the Fourth Proportional to 154,986.40, 232,479.60 and 135,303.40

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Solution

The fourth proportional to 154,986.40, 232,479.60 and 135,303.40 is: 202,955.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,986.40 : 232,479.60 = 135,303.40 : x
  2. Step 2: Convert to fraction form
    154,986.40/232,479.60 = 135,303.40/x
  3. Step 3: Cross multiply
    154,986.40x = 232,479.60 × 135,303.40
  4. Step 4: Simplify right side
    154,986.40x = 31,455,280,310.64
  5. Step 5: Solve for x
    x = 31,455,280,310.64/154,986.40
  6. Step 6: Final answer
    x = 202,955.10

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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.