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Finding the Fourth Proportional to 208,872,005.60, 313,308,008.40 and 208,872,005.60

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Solution

The fourth proportional to 208,872,005.60, 313,308,008.40 and 208,872,005.60 is: 313,308,008.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,872,005.60 : 313,308,008.40 = 208,872,005.60 : x
  2. Step 2: Convert to fraction form
    208,872,005.60/313,308,008.40 = 208,872,005.60/x
  3. Step 3: Cross multiply
    208,872,005.60x = 313,308,008.40 × 208,872,005.60
  4. Step 4: Simplify right side
    208,872,005.60x = 65,441,272,085,049,640
  5. Step 5: Solve for x
    x = 65,441,272,085,049,640/208,872,005.60
  6. Step 6: Final answer
    x = 313,308,008.40

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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.