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Finding the Fourth Proportional to 525,399,994.40, 788,174,641.20 and 161,856,442.40

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Solution

The fourth proportional to 525,399,994.40, 788,174,641.20 and 161,856,442.40 is: 242,807,660.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,399,994.40 : 788,174,641.20 = 161,856,442.40 : x
  2. Step 2: Convert to fraction form
    525,399,994.40/788,174,641.20 = 161,856,442.40/x
  3. Step 3: Cross multiply
    525,399,994.40x = 788,174,641.20 × 161,856,442.40
  4. Step 4: Simplify right side
    525,399,994.40x = 127,571,143,414,528,480
  5. Step 5: Solve for x
    x = 127,571,143,414,528,480/525,399,994.40
  6. Step 6: Final answer
    x = 242,807,660.40

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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.