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Finding the Fourth Proportional to 387,173.04, 534,302.10 and 217,422.96

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Solution

The fourth proportional to 387,173.04, 534,302.10 and 217,422.96 is: 300,045.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,173.04 : 534,302.10 = 217,422.96 : x
  2. Step 2: Convert to fraction form
    387,173.04/534,302.10 = 217,422.96/x
  3. Step 3: Cross multiply
    387,173.04x = 534,302.10 × 217,422.96
  4. Step 4: Simplify right side
    387,173.04x = 116,169,544,116.22
  5. Step 5: Solve for x
    x = 116,169,544,116.22/387,173.04
  6. Step 6: Final answer
    x = 300,045.54

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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.