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Finding the Fourth Proportional to 457,897.50, 631,898.55 and 256,693.50

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Solution

The fourth proportional to 457,897.50, 631,898.55 and 256,693.50 is: 354,237.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,897.50 : 631,898.55 = 256,693.50 : x
  2. Step 2: Convert to fraction form
    457,897.50/631,898.55 = 256,693.50/x
  3. Step 3: Cross multiply
    457,897.50x = 631,898.55 × 256,693.50
  4. Step 4: Simplify right side
    457,897.50x = 162,204,250,444.43
  5. Step 5: Solve for x
    x = 162,204,250,444.43/457,897.50
  6. Step 6: Final answer
    x = 354,237.03

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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.