Home / 281,360,378.81-388,279,602.52-155,914,670.14

Finding the Fourth Proportional to 281,360,378.81, 388,279,602.52 and 155,914,670.14

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Solution

The fourth proportional to 281,360,378.81, 388,279,602.52 and 155,914,670.14 is: 215,163,508.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,360,378.81 : 388,279,602.52 = 155,914,670.14 : x
  2. Step 2: Convert to fraction form
    281,360,378.81/388,279,602.52 = 155,914,670.14/x
  3. Step 3: Cross multiply
    281,360,378.81x = 388,279,602.52 × 155,914,670.14
  4. Step 4: Simplify right side
    281,360,378.81x = 60,538,486,148,996,104
  5. Step 5: Solve for x
    x = 60,538,486,148,996,104/281,360,378.81
  6. Step 6: Final answer
    x = 215,163,508.11

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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.