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Finding the Fourth Proportional to 514,310.40, 771,628.80 and 248,094.72

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Solution

The fourth proportional to 514,310.40, 771,628.80 and 248,094.72 is: 372,220.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    514,310.40 : 771,628.80 = 248,094.72 : x
  2. Step 2: Convert to fraction form
    514,310.40/771,628.80 = 248,094.72/x
  3. Step 3: Cross multiply
    514,310.40x = 771,628.80 × 248,094.72
  4. Step 4: Simplify right side
    514,310.40x = 191,437,031,079.94
  5. Step 5: Solve for x
    x = 191,437,031,079.94/514,310.40
  6. Step 6: Final answer
    x = 372,220.80

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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.