Home / 310,808,506.86-428,917,109.43-171,580,412.70

Finding the Fourth Proportional to 310,808,506.86, 428,917,109.43 and 171,580,412.70

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Solution

The fourth proportional to 310,808,506.86, 428,917,109.43 and 171,580,412.70 is: 236,781,725.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,808,506.86 : 428,917,109.43 = 171,580,412.70 : x
  2. Step 2: Convert to fraction form
    310,808,506.86/428,917,109.43 = 171,580,412.70/x
  3. Step 3: Cross multiply
    310,808,506.86x = 428,917,109.43 × 171,580,412.70
  4. Step 4: Simplify right side
    310,808,506.86x = 73,593,774,650,090,464
  5. Step 5: Solve for x
    x = 73,593,774,650,090,464/310,808,506.86
  6. Step 6: Final answer
    x = 236,781,725.81

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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.