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Finding the Fourth Proportional to 346,478.12, 519,717.16 and 130,377.48

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Solution

The fourth proportional to 346,478.12, 519,717.16 and 130,377.48 is: 195,566.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,478.12 : 519,717.16 = 130,377.48 : x
  2. Step 2: Convert to fraction form
    346,478.12/519,717.16 = 130,377.48/x
  3. Step 3: Cross multiply
    346,478.12x = 519,717.16 × 130,377.48
  4. Step 4: Simplify right side
    346,478.12x = 67,759,413,633.56
  5. Step 5: Solve for x
    x = 67,759,413,633.56/346,478.12
  6. Step 6: Final answer
    x = 195,566.21

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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.