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Finding the Fourth Proportional to 521,373.52, 719,607.96 and 317,492.08

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Solution

The fourth proportional to 521,373.52, 719,607.96 and 317,492.08 is: 438,207.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,373.52 : 719,607.96 = 317,492.08 : x
  2. Step 2: Convert to fraction form
    521,373.52/719,607.96 = 317,492.08/x
  3. Step 3: Cross multiply
    521,373.52x = 719,607.96 × 317,492.08
  4. Step 4: Simplify right side
    521,373.52x = 228,469,828,004.96
  5. Step 5: Solve for x
    x = 228,469,828,004.96/521,373.52
  6. Step 6: Final answer
    x = 438,207.58

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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.