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Finding the Fourth Proportional to 346,445.48, 519,662.76 and 287,155.92

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Solution

The fourth proportional to 346,445.48, 519,662.76 and 287,155.92 is: 430,729.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,445.48 : 519,662.76 = 287,155.92 : x
  2. Step 2: Convert to fraction form
    346,445.48/519,662.76 = 287,155.92/x
  3. Step 3: Cross multiply
    346,445.48x = 519,662.76 × 287,155.92
  4. Step 4: Simplify right side
    346,445.48x = 149,224,237,937.54
  5. Step 5: Solve for x
    x = 149,224,237,937.54/346,445.48
  6. Step 6: Final answer
    x = 430,729.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.