Home / 386,668,839.76-533,605,218.28-210,456,415.12

Finding the Fourth Proportional to 386,668,839.76, 533,605,218.28 and 210,456,415.12

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Solution

The fourth proportional to 386,668,839.76, 533,605,218.28 and 210,456,415.12 is: 290,431,060.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,668,839.76 : 533,605,218.28 = 210,456,415.12 : x
  2. Step 2: Convert to fraction form
    386,668,839.76/533,605,218.28 = 210,456,415.12/x
  3. Step 3: Cross multiply
    386,668,839.76x = 533,605,218.28 × 210,456,415.12
  4. Step 4: Simplify right side
    386,668,839.76x = 112,300,641,328,533,888
  5. Step 5: Solve for x
    x = 112,300,641,328,533,888/386,668,839.76
  6. Step 6: Final answer
    x = 290,431,060.85

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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.