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Finding the Fourth Proportional to 369,549,403.77, 509,978,336.85 and 202,286,619.03

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Solution

The fourth proportional to 369,549,403.77, 509,978,336.85 and 202,286,619.03 is: 279,155,621.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,549,403.77 : 509,978,336.85 = 202,286,619.03 : x
  2. Step 2: Convert to fraction form
    369,549,403.77/509,978,336.85 = 202,286,619.03/x
  3. Step 3: Cross multiply
    369,549,403.77x = 509,978,336.85 × 202,286,619.03
  4. Step 4: Simplify right side
    369,549,403.77x = 103,161,793,539,928,960
  5. Step 5: Solve for x
    x = 103,161,793,539,928,960/369,549,403.77
  6. Step 6: Final answer
    x = 279,155,621.65

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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.