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Finding the Fourth Proportional to 316,992,006.80, 475,488,010.20 and 265,973,670.80

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Solution

The fourth proportional to 316,992,006.80, 475,488,010.20 and 265,973,670.80 is: 398,960,506.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,992,006.80 : 475,488,010.20 = 265,973,670.80 : x
  2. Step 2: Convert to fraction form
    316,992,006.80/475,488,010.20 = 265,973,670.80/x
  3. Step 3: Cross multiply
    316,992,006.80x = 475,488,010.20 × 265,973,670.80
  4. Step 4: Simplify right side
    316,992,006.80x = 126,467,291,494,281,840
  5. Step 5: Solve for x
    x = 126,467,291,494,281,840/316,992,006.80
  6. Step 6: Final answer
    x = 398,960,506.20

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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.