Home / 405,910,128.16-560,157,445.20-220,271,094.64

Finding the Fourth Proportional to 405,910,128.16, 560,157,445.20 and 220,271,094.64

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Solution

The fourth proportional to 405,910,128.16, 560,157,445.20 and 220,271,094.64 is: 303,974,907.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,910,128.16 : 560,157,445.20 = 220,271,094.64 : x
  2. Step 2: Convert to fraction form
    405,910,128.16/560,157,445.20 = 220,271,094.64/x
  3. Step 3: Cross multiply
    405,910,128.16x = 560,157,445.20 × 220,271,094.64
  4. Step 4: Simplify right side
    405,910,128.16x = 123,386,493,624,949,824
  5. Step 5: Solve for x
    x = 123,386,493,624,949,824/405,910,128.16
  6. Step 6: Final answer
    x = 303,974,907.41

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.