Home / 389,374,496.32-537,336,815.52-215,534,240.32

Finding the Fourth Proportional to 389,374,496.32, 537,336,815.52 and 215,534,240.32

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Solution

The fourth proportional to 389,374,496.32, 537,336,815.52 and 215,534,240.32 is: 297,437,257.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,374,496.32 : 537,336,815.52 = 215,534,240.32 : x
  2. Step 2: Convert to fraction form
    389,374,496.32/537,336,815.52 = 215,534,240.32/x
  3. Step 3: Cross multiply
    389,374,496.32x = 537,336,815.52 × 215,534,240.32
  4. Step 4: Simplify right side
    389,374,496.32x = 115,814,482,329,071,184
  5. Step 5: Solve for x
    x = 115,814,482,329,071,184/389,374,496.32
  6. Step 6: Final answer
    x = 297,437,257.51

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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.