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Finding the Fourth Proportional to 527,075.20, 790,612.80 and 133,091.20

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Solution

The fourth proportional to 527,075.20, 790,612.80 and 133,091.20 is: 199,636.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,075.20 : 790,612.80 = 133,091.20 : x
  2. Step 2: Convert to fraction form
    527,075.20/790,612.80 = 133,091.20/x
  3. Step 3: Cross multiply
    527,075.20x = 790,612.80 × 133,091.20
  4. Step 4: Simplify right side
    527,075.20x = 105,223,606,287.36
  5. Step 5: Solve for x
    x = 105,223,606,287.36/527,075.20
  6. Step 6: Final answer
    x = 199,636.80

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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.