Home / 280,389,314.98-386,935,428.09-156,628,909.54

Finding the Fourth Proportional to 280,389,314.98, 386,935,428.09 and 156,628,909.54

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Solution

The fourth proportional to 280,389,314.98, 386,935,428.09 and 156,628,909.54 is: 216,146,874.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,389,314.98 : 386,935,428.09 = 156,628,909.54 : x
  2. Step 2: Convert to fraction form
    280,389,314.98/386,935,428.09 = 156,628,909.54/x
  3. Step 3: Cross multiply
    280,389,314.98x = 386,935,428.09 × 156,628,909.54
  4. Step 4: Simplify right side
    280,389,314.98x = 60,605,274,164,129,776
  5. Step 5: Solve for x
    x = 60,605,274,164,129,776/280,389,314.98
  6. Step 6: Final answer
    x = 216,146,874.81

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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.