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Finding the Fourth Proportional to 199,684,915.20, 299,385,655.20 and 90,562,363.20

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Solution

The fourth proportional to 199,684,915.20, 299,385,655.20 and 90,562,363.20 is: 135,779,272.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,684,915.20 : 299,385,655.20 = 90,562,363.20 : x
  2. Step 2: Convert to fraction form
    199,684,915.20/299,385,655.20 = 90,562,363.20/x
  3. Step 3: Cross multiply
    199,684,915.20x = 299,385,655.20 × 90,562,363.20
  4. Step 4: Simplify right side
    199,684,915.20x = 27,113,072,443,092,368
  5. Step 5: Solve for x
    x = 27,113,072,443,092,368/199,684,915.20
  6. Step 6: Final answer
    x = 135,779,272.14

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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.