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Finding the Fourth Proportional to 520,240.64, 780,423.51 and 183,211.65

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Solution

The fourth proportional to 520,240.64, 780,423.51 and 183,211.65 is: 274,839.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,240.64 : 780,423.51 = 183,211.65 : x
  2. Step 2: Convert to fraction form
    520,240.64/780,423.51 = 183,211.65/x
  3. Step 3: Cross multiply
    520,240.64x = 780,423.51 × 183,211.65
  4. Step 4: Simplify right side
    520,240.64x = 142,982,678,965.89
  5. Step 5: Solve for x
    x = 142,982,678,965.89/520,240.64
  6. Step 6: Final answer
    x = 274,839.51

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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.