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Finding the Fourth Proportional to 423,578.94, 635,368.64 and 265,918.11

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Solution

The fourth proportional to 423,578.94, 635,368.64 and 265,918.11 is: 398,877.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,578.94 : 635,368.64 = 265,918.11 : x
  2. Step 2: Convert to fraction form
    423,578.94/635,368.64 = 265,918.11/x
  3. Step 3: Cross multiply
    423,578.94x = 635,368.64 × 265,918.11
  4. Step 4: Simplify right side
    423,578.94x = 168,956,026,572.48
  5. Step 5: Solve for x
    x = 168,956,026,572.48/423,578.94
  6. Step 6: Final answer
    x = 398,877.31

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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.