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Finding the Fourth Proportional to 520,228.05, 780,394.05 and 141,154.80

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Solution

The fourth proportional to 520,228.05, 780,394.05 and 141,154.80 is: 211,746.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,228.05 : 780,394.05 = 141,154.80 : x
  2. Step 2: Convert to fraction form
    520,228.05/780,394.05 = 141,154.80/x
  3. Step 3: Cross multiply
    520,228.05x = 780,394.05 × 141,154.80
  4. Step 4: Simplify right side
    520,228.05x = 110,156,366,048.94
  5. Step 5: Solve for x
    x = 110,156,366,048.94/520,228.05
  6. Step 6: Final answer
    x = 211,746.30

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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.