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Finding the Fourth Proportional to 354,868.86, 488,476.02 and 309,466.74

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Solution

The fourth proportional to 354,868.86, 488,476.02 and 309,466.74 is: 425,980.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,868.86 : 488,476.02 = 309,466.74 : x
  2. Step 2: Convert to fraction form
    354,868.86/488,476.02 = 309,466.74/x
  3. Step 3: Cross multiply
    354,868.86x = 488,476.02 × 309,466.74
  4. Step 4: Simplify right side
    354,868.86x = 151,167,081,477.58
  5. Step 5: Solve for x
    x = 151,167,081,477.58/354,868.86
  6. Step 6: Final answer
    x = 425,980.13

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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.