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Finding the Fourth Proportional to 520,226.37, 780,298.54 and 165,243.47

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Solution

The fourth proportional to 520,226.37, 780,298.54 and 165,243.47 is: 247,852.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,226.37 : 780,298.54 = 165,243.47 : x
  2. Step 2: Convert to fraction form
    520,226.37/780,298.54 = 165,243.47/x
  3. Step 3: Cross multiply
    520,226.37x = 780,298.54 × 165,243.47
  4. Step 4: Simplify right side
    520,226.37x = 128,939,234,070.93
  5. Step 5: Solve for x
    x = 128,939,234,070.93/520,226.37
  6. Step 6: Final answer
    x = 247,852.17

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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.