Home / 387,680,213.20-581,026,342.20-206,014,421.20

Finding the Fourth Proportional to 387,680,213.20, 581,026,342.20 and 206,014,421.20

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Solution

The fourth proportional to 387,680,213.20, 581,026,342.20 and 206,014,421.20 is: 308,759,130.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,680,213.20 : 581,026,342.20 = 206,014,421.20 : x
  2. Step 2: Convert to fraction form
    387,680,213.20/581,026,342.20 = 206,014,421.20/x
  3. Step 3: Cross multiply
    387,680,213.20x = 581,026,342.20 × 206,014,421.20
  4. Step 4: Simplify right side
    387,680,213.20x = 119,699,805,590,286,144
  5. Step 5: Solve for x
    x = 119,699,805,590,286,144/387,680,213.20
  6. Step 6: Final answer
    x = 308,759,130.63

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.