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Finding the Fourth Proportional to 348,530.78, 522,585.30 and 156,370.02

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Solution

The fourth proportional to 348,530.78, 522,585.30 and 156,370.02 is: 234,460.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,530.78 : 522,585.30 = 156,370.02 : x
  2. Step 2: Convert to fraction form
    348,530.78/522,585.30 = 156,370.02/x
  3. Step 3: Cross multiply
    348,530.78x = 522,585.30 × 156,370.02
  4. Step 4: Simplify right side
    348,530.78x = 81,716,673,812.71
  5. Step 5: Solve for x
    x = 81,716,673,812.71/348,530.78
  6. Step 6: Final answer
    x = 234,460.42

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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.