Home / 280,079,075.07-386,543,016.09-159,406,402.48

Finding the Fourth Proportional to 280,079,075.07, 386,543,016.09 and 159,406,402.48

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Solution

The fourth proportional to 280,079,075.07, 386,543,016.09 and 159,406,402.48 is: 220,000,125.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,079,075.07 : 386,543,016.09 = 159,406,402.48 : x
  2. Step 2: Convert to fraction form
    280,079,075.07/386,543,016.09 = 159,406,402.48/x
  3. Step 3: Cross multiply
    280,079,075.07x = 386,543,016.09 × 159,406,402.48
  4. Step 4: Simplify right side
    280,079,075.07x = 61,617,431,597,709,288
  5. Step 5: Solve for x
    x = 61,617,431,597,709,288/280,079,075.07
  6. Step 6: Final answer
    x = 220,000,125.26

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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.