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Finding the Fourth Proportional to 520,251.84, 779,775.36 and 239,179.20

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Solution

The fourth proportional to 520,251.84, 779,775.36 and 239,179.20 is: 358,491.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,251.84 : 779,775.36 = 239,179.20 : x
  2. Step 2: Convert to fraction form
    520,251.84/779,775.36 = 239,179.20/x
  3. Step 3: Cross multiply
    520,251.84x = 779,775.36 × 239,179.20
  4. Step 4: Simplify right side
    520,251.84x = 186,506,046,784.51
  5. Step 5: Solve for x
    x = 186,506,046,784.51/520,251.84
  6. Step 6: Final answer
    x = 358,491.85

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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.