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Finding the Fourth Proportional to 314,928,709.80, 472,393,064.70 and 216,293,260.20

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Solution

The fourth proportional to 314,928,709.80, 472,393,064.70 and 216,293,260.20 is: 324,439,890.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    314,928,709.80 : 472,393,064.70 = 216,293,260.20 : x
  2. Step 2: Convert to fraction form
    314,928,709.80/472,393,064.70 = 216,293,260.20/x
  3. Step 3: Cross multiply
    314,928,709.80x = 472,393,064.70 × 216,293,260.20
  4. Step 4: Simplify right side
    314,928,709.80x = 102,175,436,059,832,528
  5. Step 5: Solve for x
    x = 102,175,436,059,832,528/314,928,709.80
  6. Step 6: Final answer
    x = 324,439,890.30

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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.