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Finding the Fourth Proportional to 457,018.74, 630,685.46 and 253,069.65

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Solution

The fourth proportional to 457,018.74, 630,685.46 and 253,069.65 is: 349,235.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,018.74 : 630,685.46 = 253,069.65 : x
  2. Step 2: Convert to fraction form
    457,018.74/630,685.46 = 253,069.65/x
  3. Step 3: Cross multiply
    457,018.74x = 630,685.46 × 253,069.65
  4. Step 4: Simplify right side
    457,018.74x = 159,607,348,622.29
  5. Step 5: Solve for x
    x = 159,607,348,622.29/457,018.74
  6. Step 6: Final answer
    x = 349,235.89

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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.