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Finding the Fourth Proportional to 520,853.70, 781,280.55 and 146,876.70

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Solution

The fourth proportional to 520,853.70, 781,280.55 and 146,876.70 is: 220,315.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,853.70 : 781,280.55 = 146,876.70 : x
  2. Step 2: Convert to fraction form
    520,853.70/781,280.55 = 146,876.70/x
  3. Step 3: Cross multiply
    520,853.70x = 781,280.55 × 146,876.70
  4. Step 4: Simplify right side
    520,853.70x = 114,751,908,958.19
  5. Step 5: Solve for x
    x = 114,751,908,958.19/520,853.70
  6. Step 6: Final answer
    x = 220,315.05

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Similar ratio
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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.