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Finding the Fourth Proportional to 279,854,561.60, 419,958,789.60 and 164,838,881.60

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Solution

The fourth proportional to 279,854,561.60, 419,958,789.60 and 164,838,881.60 is: 247,362,547.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,854,561.60 : 419,958,789.60 = 164,838,881.60 : x
  2. Step 2: Convert to fraction form
    279,854,561.60/419,958,789.60 = 164,838,881.60/x
  3. Step 3: Cross multiply
    279,854,561.60x = 419,958,789.60 × 164,838,881.60
  4. Step 4: Simplify right side
    279,854,561.60x = 69,225,537,195,753,712
  5. Step 5: Solve for x
    x = 69,225,537,195,753,712/279,854,561.60
  6. Step 6: Final answer
    x = 247,362,547.17

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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.