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Finding the Fourth Proportional to 28,965,254.80, 43,398,115.80 and 15,298,157.20

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Solution

The fourth proportional to 28,965,254.80, 43,398,115.80 and 15,298,157.20 is: 22,920,951.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,965,254.80 : 43,398,115.80 = 15,298,157.20 : x
  2. Step 2: Convert to fraction form
    28,965,254.80/43,398,115.80 = 15,298,157.20/x
  3. Step 3: Cross multiply
    28,965,254.80x = 43,398,115.80 × 15,298,157.20
  4. Step 4: Simplify right side
    28,965,254.80x = 663,911,197,692,203.62
  5. Step 5: Solve for x
    x = 663,911,197,692,203.62/28,965,254.80
  6. Step 6: Final answer
    x = 22,920,951.40

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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.