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Finding the Fourth Proportional to 265,980,840.80, 399,223,203.60 and 163,944,168.80

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Solution

The fourth proportional to 265,980,840.80, 399,223,203.60 and 163,944,168.80 is: 246,071,544.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,980,840.80 : 399,223,203.60 = 163,944,168.80 : x
  2. Step 2: Convert to fraction form
    265,980,840.80/399,223,203.60 = 163,944,168.80/x
  3. Step 3: Cross multiply
    265,980,840.80x = 399,223,203.60 × 163,944,168.80
  4. Step 4: Simplify right side
    265,980,840.80x = 65,450,316,279,875,176
  5. Step 5: Solve for x
    x = 65,450,316,279,875,176/265,980,840.80
  6. Step 6: Final answer
    x = 246,071,544.41

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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.