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Finding the Fourth Proportional to 210,015,488.80, 314,928,754.80 and 80,580,080.80

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Solution

The fourth proportional to 210,015,488.80, 314,928,754.80 and 80,580,080.80 is: 120,833,871.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,015,488.80 : 314,928,754.80 = 80,580,080.80 : x
  2. Step 2: Convert to fraction form
    210,015,488.80/314,928,754.80 = 80,580,080.80/x
  3. Step 3: Cross multiply
    210,015,488.80x = 314,928,754.80 × 80,580,080.80
  4. Step 4: Simplify right side
    210,015,488.80x = 25,376,984,508,027,388
  5. Step 5: Solve for x
    x = 25,376,984,508,027,388/210,015,488.80
  6. Step 6: Final answer
    x = 120,833,871.13

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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.