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Finding the Fourth Proportional to 341,895.15, 512,398.89 and 139,254.93

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Solution

The fourth proportional to 341,895.15, 512,398.89 and 139,254.93 is: 208,701.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    341,895.15 : 512,398.89 = 139,254.93 : x
  2. Step 2: Convert to fraction form
    341,895.15/512,398.89 = 139,254.93/x
  3. Step 3: Cross multiply
    341,895.15x = 512,398.89 × 139,254.93
  4. Step 4: Simplify right side
    341,895.15x = 71,354,071,559.03
  5. Step 5: Solve for x
    x = 71,354,071,559.03/341,895.15
  6. Step 6: Final answer
    x = 208,701.62

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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.