Home / 280,434,717-386,992,779.84-156,676,323.60

Finding the Fourth Proportional to 280,434,717, 386,992,779.84 and 156,676,323.60

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Solution

The fourth proportional to 280,434,717, 386,992,779.84 and 156,676,323.60 is: 216,209,343.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,434,717 : 386,992,779.84 = 156,676,323.60 : x
  2. Step 2: Convert to fraction form
    280,434,717/386,992,779.84 = 156,676,323.60/x
  3. Step 3: Cross multiply
    280,434,717x = 386,992,779.84 × 156,676,323.60
  4. Step 4: Simplify right side
    280,434,717x = 60,632,606,005,075,392
  5. Step 5: Solve for x
    x = 60,632,606,005,075,392/280,434,717
  6. Step 6: Final answer
    x = 216,209,343.31

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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.