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Finding the Fourth Proportional to 268,015,459.60, 402,023,189.40 and 240,805,680.40

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Solution

The fourth proportional to 268,015,459.60, 402,023,189.40 and 240,805,680.40 is: 361,208,520.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,015,459.60 : 402,023,189.40 = 240,805,680.40 : x
  2. Step 2: Convert to fraction form
    268,015,459.60/402,023,189.40 = 240,805,680.40/x
  3. Step 3: Cross multiply
    268,015,459.60x = 402,023,189.40 × 240,805,680.40
  4. Step 4: Simplify right side
    268,015,459.60x = 96,809,467,660,045,072
  5. Step 5: Solve for x
    x = 96,809,467,660,045,072/268,015,459.60
  6. Step 6: Final answer
    x = 361,208,520.60

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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.