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Finding the Fourth Proportional to 252,648,005.20, 378,972,007.80 and 249,246,782.80

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Solution

The fourth proportional to 252,648,005.20, 378,972,007.80 and 249,246,782.80 is: 373,870,174.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,648,005.20 : 378,972,007.80 = 249,246,782.80 : x
  2. Step 2: Convert to fraction form
    252,648,005.20/378,972,007.80 = 249,246,782.80/x
  3. Step 3: Cross multiply
    252,648,005.20x = 378,972,007.80 × 249,246,782.80
  4. Step 4: Simplify right side
    252,648,005.20x = 94,457,553,715,406,512
  5. Step 5: Solve for x
    x = 94,457,553,715,406,512/252,648,005.20
  6. Step 6: Final answer
    x = 373,870,174.20

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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.