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Finding the Fourth Proportional to 348,710.34, 481,036.23 and 287,926.32

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Solution

The fourth proportional to 348,710.34, 481,036.23 and 287,926.32 is: 397,186.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,710.34 : 481,036.23 = 287,926.32 : x
  2. Step 2: Convert to fraction form
    348,710.34/481,036.23 = 287,926.32/x
  3. Step 3: Cross multiply
    348,710.34x = 481,036.23 × 287,926.32
  4. Step 4: Simplify right side
    348,710.34x = 138,502,991,490.57
  5. Step 5: Solve for x
    x = 138,502,991,490.57/348,710.34
  6. Step 6: Final answer
    x = 397,186.36

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1.5x scale

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.