Home / 387,171,638.40-534,290,133.80-210,961,081.70

Finding the Fourth Proportional to 387,171,638.40, 534,290,133.80 and 210,961,081.70

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Solution

The fourth proportional to 387,171,638.40, 534,290,133.80 and 210,961,081.70 is: 291,122,627.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,171,638.40 : 534,290,133.80 = 210,961,081.70 : x
  2. Step 2: Convert to fraction form
    387,171,638.40/534,290,133.80 = 210,961,081.70/x
  3. Step 3: Cross multiply
    387,171,638.40x = 534,290,133.80 × 210,961,081.70
  4. Step 4: Simplify right side
    387,171,638.40x = 112,714,424,568,085,728
  5. Step 5: Solve for x
    x = 112,714,424,568,085,728/387,171,638.40
  6. Step 6: Final answer
    x = 291,122,627.25

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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.