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Finding the Fourth Proportional to 384,670.16, 530,918.16 and 253,617.70

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Solution

The fourth proportional to 384,670.16, 530,918.16 and 253,617.70 is: 350,040.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,670.16 : 530,918.16 = 253,617.70 : x
  2. Step 2: Convert to fraction form
    384,670.16/530,918.16 = 253,617.70/x
  3. Step 3: Cross multiply
    384,670.16x = 530,918.16 × 253,617.70
  4. Step 4: Simplify right side
    384,670.16x = 134,650,242,627.43
  5. Step 5: Solve for x
    x = 134,650,242,627.43/384,670.16
  6. Step 6: Final answer
    x = 350,040.78

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Why These Related Problems?

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