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Finding the Fourth Proportional to 314,928,272.80, 472,392,409.20 and 293,404,912.30

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Solution

The fourth proportional to 314,928,272.80, 472,392,409.20 and 293,404,912.30 is: 440,107,368.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    314,928,272.80 : 472,392,409.20 = 293,404,912.30 : x
  2. Step 2: Convert to fraction form
    314,928,272.80/472,392,409.20 = 293,404,912.30/x
  3. Step 3: Cross multiply
    314,928,272.80x = 472,392,409.20 × 293,404,912.30
  4. Step 4: Simplify right side
    314,928,272.80x = 138,602,253,392,511,712
  5. Step 5: Solve for x
    x = 138,602,253,392,511,712/314,928,272.80
  6. Step 6: Final answer
    x = 440,107,368.45

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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.