Home / 387,171,622.40-534,290,111.76-210,961,065.73

Finding the Fourth Proportional to 387,171,622.40, 534,290,111.76 and 210,961,065.73

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Solution

The fourth proportional to 387,171,622.40, 534,290,111.76 and 210,961,065.73 is: 291,122,605.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,171,622.40 : 534,290,111.76 = 210,961,065.73 : x
  2. Step 2: Convert to fraction form
    387,171,622.40/534,290,111.76 = 210,961,065.73/x
  3. Step 3: Cross multiply
    387,171,622.40x = 534,290,111.76 × 210,961,065.73
  4. Step 4: Simplify right side
    387,171,622.40x = 112,714,411,385,767,168
  5. Step 5: Solve for x
    x = 112,714,411,385,767,168/387,171,622.40
  6. Step 6: Final answer
    x = 291,122,605.23

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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.