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Finding the Fourth Proportional to 207,231,764.80, 290,549,144 and 207,231,764.80

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Solution

The fourth proportional to 207,231,764.80, 290,549,144 and 207,231,764.80 is: 290,549,144

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,231,764.80 : 290,549,144 = 207,231,764.80 : x
  2. Step 2: Convert to fraction form
    207,231,764.80/290,549,144 = 207,231,764.80/x
  3. Step 3: Cross multiply
    207,231,764.80x = 290,549,144 × 207,231,764.80
  4. Step 4: Simplify right side
    207,231,764.80x = 60,211,011,872,249,336
  5. Step 5: Solve for x
    x = 60,211,011,872,249,336/207,231,764.80
  6. Step 6: Final answer
    x = 290,549,144

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.