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Finding the Fourth Proportional to 386,273,999.90, 579,513,643.05 and 167,830,607.90

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Solution

The fourth proportional to 386,273,999.90, 579,513,643.05 and 167,830,607.90 is: 251,790,508.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,273,999.90 : 579,513,643.05 = 167,830,607.90 : x
  2. Step 2: Convert to fraction form
    386,273,999.90/579,513,643.05 = 167,830,607.90/x
  3. Step 3: Cross multiply
    386,273,999.90x = 579,513,643.05 × 167,830,607.90
  4. Step 4: Simplify right side
    386,273,999.90x = 97,260,126,999,425,104
  5. Step 5: Solve for x
    x = 97,260,126,999,425,104/386,273,999.90
  6. Step 6: Final answer
    x = 251,790,508.87

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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.