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Finding the Fourth Proportional to 457,021.94, 630,689.88 and 253,072.85

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Solution

The fourth proportional to 457,021.94, 630,689.88 and 253,072.85 is: 349,240.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,021.94 : 630,689.88 = 253,072.85 : x
  2. Step 2: Convert to fraction form
    457,021.94/630,689.88 = 253,072.85/x
  3. Step 3: Cross multiply
    457,021.94x = 630,689.88 × 253,072.85
  4. Step 4: Simplify right side
    457,021.94x = 159,610,485,397.76
  5. Step 5: Solve for x
    x = 159,610,485,397.76/457,021.94
  6. Step 6: Final answer
    x = 349,240.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.