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Finding the Fourth Proportional to 208,303.20, 312,422.40 and 58,528.80

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Solution

The fourth proportional to 208,303.20, 312,422.40 and 58,528.80 is: 87,784.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,303.20 : 312,422.40 = 58,528.80 : x
  2. Step 2: Convert to fraction form
    208,303.20/312,422.40 = 58,528.80/x
  3. Step 3: Cross multiply
    208,303.20x = 312,422.40 × 58,528.80
  4. Step 4: Simplify right side
    208,303.20x = 18,285,708,165.12
  5. Step 5: Solve for x
    x = 18,285,708,165.12/208,303.20
  6. Step 6: Final answer
    x = 87,784.10

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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.