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Finding the Fourth Proportional to 401,302.16, 553,853.40 and 248,389.40

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Solution

The fourth proportional to 401,302.16, 553,853.40 and 248,389.40 is: 342,812.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,302.16 : 553,853.40 = 248,389.40 : x
  2. Step 2: Convert to fraction form
    401,302.16/553,853.40 = 248,389.40/x
  3. Step 3: Cross multiply
    401,302.16x = 553,853.40 × 248,389.40
  4. Step 4: Simplify right side
    401,302.16x = 137,571,313,713.96
  5. Step 5: Solve for x
    x = 137,571,313,713.96/401,302.16
  6. Step 6: Final answer
    x = 342,812.29

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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.