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Finding the Fourth Proportional to 385,333.20, 577,999.80 and 245,710.80

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Solution

The fourth proportional to 385,333.20, 577,999.80 and 245,710.80 is: 368,566.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,333.20 : 577,999.80 = 245,710.80 : x
  2. Step 2: Convert to fraction form
    385,333.20/577,999.80 = 245,710.80/x
  3. Step 3: Cross multiply
    385,333.20x = 577,999.80 × 245,710.80
  4. Step 4: Simplify right side
    385,333.20x = 142,020,793,257.84
  5. Step 5: Solve for x
    x = 142,020,793,257.84/385,333.20
  6. Step 6: Final answer
    x = 368,566.20

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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.