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Finding the Fourth Proportional to 384,712.20, 577,068.30 and 366,341.40

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Solution

The fourth proportional to 384,712.20, 577,068.30 and 366,341.40 is: 549,512.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,712.20 : 577,068.30 = 366,341.40 : x
  2. Step 2: Convert to fraction form
    384,712.20/577,068.30 = 366,341.40/x
  3. Step 3: Cross multiply
    384,712.20x = 577,068.30 × 366,341.40
  4. Step 4: Simplify right side
    384,712.20x = 211,404,008,917.62
  5. Step 5: Solve for x
    x = 211,404,008,917.62/384,712.20
  6. Step 6: Final answer
    x = 549,512.10

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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.