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Finding the Fourth Proportional to 310,312.32, 428,483.52 and 252,960.64

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Solution

The fourth proportional to 310,312.32, 428,483.52 and 252,960.64 is: 349,291.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,312.32 : 428,483.52 = 252,960.64 : x
  2. Step 2: Convert to fraction form
    310,312.32/428,483.52 = 252,960.64/x
  3. Step 3: Cross multiply
    310,312.32x = 428,483.52 × 252,960.64
  4. Step 4: Simplify right side
    310,312.32x = 108,389,465,448.65
  5. Step 5: Solve for x
    x = 108,389,465,448.65/310,312.32
  6. Step 6: Final answer
    x = 349,291.53

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.