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Finding the Fourth Proportional to 403,478,039.60, 605,217,059.40 and 240,219,364.40

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Solution

The fourth proportional to 403,478,039.60, 605,217,059.40 and 240,219,364.40 is: 360,329,046.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,478,039.60 : 605,217,059.40 = 240,219,364.40 : x
  2. Step 2: Convert to fraction form
    403,478,039.60/605,217,059.40 = 240,219,364.40/x
  3. Step 3: Cross multiply
    403,478,039.60x = 605,217,059.40 × 240,219,364.40
  4. Step 4: Simplify right side
    403,478,039.60x = 145,384,857,333,105,056
  5. Step 5: Solve for x
    x = 145,384,857,333,105,056/403,478,039.60
  6. Step 6: Final answer
    x = 360,329,046.60

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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.