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Finding the Fourth Proportional to 429,698,282.04, 644,673,197.22 and 138,559,549.44

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Solution

The fourth proportional to 429,698,282.04, 644,673,197.22 and 138,559,549.44 is: 207,879,881.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,698,282.04 : 644,673,197.22 = 138,559,549.44 : x
  2. Step 2: Convert to fraction form
    429,698,282.04/644,673,197.22 = 138,559,549.44/x
  3. Step 3: Cross multiply
    429,698,282.04x = 644,673,197.22 × 138,559,549.44
  4. Step 4: Simplify right side
    429,698,282.04x = 89,325,627,742,847,456
  5. Step 5: Solve for x
    x = 89,325,627,742,847,456/429,698,282.04
  6. Step 6: Final answer
    x = 207,879,881.02

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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.