Home / 214,487,643.60-321,815,446.20-78,186,805.20

Finding the Fourth Proportional to 214,487,643.60, 321,815,446.20 and 78,186,805.20

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Solution

The fourth proportional to 214,487,643.60, 321,815,446.20 and 78,186,805.20 is: 117,310,821.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,487,643.60 : 321,815,446.20 = 78,186,805.20 : x
  2. Step 2: Convert to fraction form
    214,487,643.60/321,815,446.20 = 78,186,805.20/x
  3. Step 3: Cross multiply
    214,487,643.60x = 321,815,446.20 × 78,186,805.20
  4. Step 4: Simplify right side
    214,487,643.60x = 25,161,721,602,390,480
  5. Step 5: Solve for x
    x = 25,161,721,602,390,480/214,487,643.60
  6. Step 6: Final answer
    x = 117,310,821.17

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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.