Home / 310,808,506.37-428,917,108.74-171,580,412.21

Finding the Fourth Proportional to 310,808,506.37, 428,917,108.74 and 171,580,412.21

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Solution

The fourth proportional to 310,808,506.37, 428,917,108.74 and 171,580,412.21 is: 236,781,725.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,808,506.37 : 428,917,108.74 = 171,580,412.21 : x
  2. Step 2: Convert to fraction form
    310,808,506.37/428,917,108.74 = 171,580,412.21/x
  3. Step 3: Cross multiply
    310,808,506.37x = 428,917,108.74 × 171,580,412.21
  4. Step 4: Simplify right side
    310,808,506.37x = 73,593,774,321,530,592
  5. Step 5: Solve for x
    x = 73,593,774,321,530,592/310,808,506.37
  6. Step 6: Final answer
    x = 236,781,725.12

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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.