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Finding the Fourth Proportional to 520,323.92, 780,319.77 and 165,254.88

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Solution

The fourth proportional to 520,323.92, 780,319.77 and 165,254.88 is: 247,829.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,323.92 : 780,319.77 = 165,254.88 : x
  2. Step 2: Convert to fraction form
    520,323.92/780,319.77 = 165,254.88/x
  3. Step 3: Cross multiply
    520,323.92x = 780,319.77 × 165,254.88
  4. Step 4: Simplify right side
    520,323.92x = 128,951,649,952.98
  5. Step 5: Solve for x
    x = 128,951,649,952.98/520,323.92
  6. Step 6: Final answer
    x = 247,829.57

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1.5x scale

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.