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Finding the Fourth Proportional to 455,510.86, 628,594.23 and 251,557.72

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Solution

The fourth proportional to 455,510.86, 628,594.23 and 251,557.72 is: 347,143.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,510.86 : 628,594.23 = 251,557.72 : x
  2. Step 2: Convert to fraction form
    455,510.86/628,594.23 = 251,557.72/x
  3. Step 3: Cross multiply
    455,510.86x = 628,594.23 × 251,557.72
  4. Step 4: Simplify right side
    455,510.86x = 158,127,731,303.96
  5. Step 5: Solve for x
    x = 158,127,731,303.96/455,510.86
  6. Step 6: Final answer
    x = 347,143.71

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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.