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Finding the Fourth Proportional to 346,488.63, 519,732.90 and 130,387.98

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Solution

The fourth proportional to 346,488.63, 519,732.90 and 130,387.98 is: 195,581.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,488.63 : 519,732.90 = 130,387.98 : x
  2. Step 2: Convert to fraction form
    346,488.63/519,732.90 = 130,387.98/x
  3. Step 3: Cross multiply
    346,488.63x = 519,732.90 × 130,387.98
  4. Step 4: Simplify right side
    346,488.63x = 67,766,922,970.54
  5. Step 5: Solve for x
    x = 67,766,922,970.54/346,488.63
  6. Step 6: Final answer
    x = 195,581.95

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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.