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Finding the Fourth Proportional to 314,939,728.80, 472,409,593.20 and 271,101,751.20

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Solution

The fourth proportional to 314,939,728.80, 472,409,593.20 and 271,101,751.20 is: 406,652,626.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    314,939,728.80 : 472,409,593.20 = 271,101,751.20 : x
  2. Step 2: Convert to fraction form
    314,939,728.80/472,409,593.20 = 271,101,751.20/x
  3. Step 3: Cross multiply
    314,939,728.80x = 472,409,593.20 × 271,101,751.20
  4. Step 4: Simplify right side
    314,939,728.80x = 128,071,068,000,199,600
  5. Step 5: Solve for x
    x = 128,071,068,000,199,600/314,939,728.80
  6. Step 6: Final answer
    x = 406,652,626.80

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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.