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Finding the Fourth Proportional to 403,356,334.40, 605,034,501.60 and 265,606,827.20

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Solution

The fourth proportional to 403,356,334.40, 605,034,501.60 and 265,606,827.20 is: 398,410,240.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,356,334.40 : 605,034,501.60 = 265,606,827.20 : x
  2. Step 2: Convert to fraction form
    403,356,334.40/605,034,501.60 = 265,606,827.20/x
  3. Step 3: Cross multiply
    403,356,334.40x = 605,034,501.60 × 265,606,827.20
  4. Step 4: Simplify right side
    403,356,334.40x = 160,701,294,316,509,312
  5. Step 5: Solve for x
    x = 160,701,294,316,509,312/403,356,334.40
  6. Step 6: Final answer
    x = 398,410,240.80

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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.