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Finding the Fourth Proportional to 521,253.66, 719,442.24 and 317,371.80

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Solution

The fourth proportional to 521,253.66, 719,442.24 and 317,371.80 is: 438,041.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,253.66 : 719,442.24 = 317,371.80 : x
  2. Step 2: Convert to fraction form
    521,253.66/719,442.24 = 317,371.80/x
  3. Step 3: Cross multiply
    521,253.66x = 719,442.24 × 317,371.80
  4. Step 4: Simplify right side
    521,253.66x = 228,330,678,704.83
  5. Step 5: Solve for x
    x = 228,330,678,704.83/521,253.66
  6. Step 6: Final answer
    x = 438,041.39

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1.5x scale

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.