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Finding the Fourth Proportional to 529,328.20, 793,987.02 and 213,780.76

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Solution

The fourth proportional to 529,328.20, 793,987.02 and 213,780.76 is: 320,669.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,328.20 : 793,987.02 = 213,780.76 : x
  2. Step 2: Convert to fraction form
    529,328.20/793,987.02 = 213,780.76/x
  3. Step 3: Cross multiply
    529,328.20x = 793,987.02 × 213,780.76
  4. Step 4: Simplify right side
    529,328.20x = 169,739,148,565.74
  5. Step 5: Solve for x
    x = 169,739,148,565.74/529,328.20
  6. Step 6: Final answer
    x = 320,669.01

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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.