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Finding the Fourth Proportional to 369,775.80, 554,663.70 and 355,260.60

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Solution

The fourth proportional to 369,775.80, 554,663.70 and 355,260.60 is: 532,890.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,775.80 : 554,663.70 = 355,260.60 : x
  2. Step 2: Convert to fraction form
    369,775.80/554,663.70 = 355,260.60/x
  3. Step 3: Cross multiply
    369,775.80x = 554,663.70 × 355,260.60
  4. Step 4: Simplify right side
    369,775.80x = 197,050,158,860.22
  5. Step 5: Solve for x
    x = 197,050,158,860.22/369,775.80
  6. Step 6: Final answer
    x = 532,890.90

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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.