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Finding the Fourth Proportional to 394,486,992.60, 591,730,488.90 and 164,621,045.40

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Solution

The fourth proportional to 394,486,992.60, 591,730,488.90 and 164,621,045.40 is: 246,931,568.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,486,992.60 : 591,730,488.90 = 164,621,045.40 : x
  2. Step 2: Convert to fraction form
    394,486,992.60/591,730,488.90 = 164,621,045.40/x
  3. Step 3: Cross multiply
    394,486,992.60x = 591,730,488.90 × 164,621,045.40
  4. Step 4: Simplify right side
    394,486,992.60x = 97,411,291,677,771,088
  5. Step 5: Solve for x
    x = 97,411,291,677,771,088/394,486,992.60
  6. Step 6: Final answer
    x = 246,931,568.10

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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.