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Finding the Fourth Proportional to 529,417.80, 794,126.70 and 213,712.20

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Solution

The fourth proportional to 529,417.80, 794,126.70 and 213,712.20 is: 320,568.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,417.80 : 794,126.70 = 213,712.20 : x
  2. Step 2: Convert to fraction form
    529,417.80/794,126.70 = 213,712.20/x
  3. Step 3: Cross multiply
    529,417.80x = 794,126.70 × 213,712.20
  4. Step 4: Simplify right side
    529,417.80x = 169,714,564,135.74
  5. Step 5: Solve for x
    x = 169,714,564,135.74/529,417.80
  6. Step 6: Final answer
    x = 320,568.30

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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.