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Finding the Fourth Proportional to 265,715,477.60, 398,573,216.40 and 163,146,927.20

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Solution

The fourth proportional to 265,715,477.60, 398,573,216.40 and 163,146,927.20 is: 244,720,390.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,715,477.60 : 398,573,216.40 = 163,146,927.20 : x
  2. Step 2: Convert to fraction form
    265,715,477.60/398,573,216.40 = 163,146,927.20/x
  3. Step 3: Cross multiply
    265,715,477.60x = 398,573,216.40 × 163,146,927.20
  4. Step 4: Simplify right side
    265,715,477.60x = 65,025,995,519,880,640
  5. Step 5: Solve for x
    x = 65,025,995,519,880,640/265,715,477.60
  6. Step 6: Final answer
    x = 244,720,390.80

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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.