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Finding the Fourth Proportional to 342,578.61, 472,728.87 and 189,617.00

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Solution

The fourth proportional to 342,578.61, 472,728.87 and 189,617.00 is: 261,655.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,578.61 : 472,728.87 = 189,617.00 : x
  2. Step 2: Convert to fraction form
    342,578.61/472,728.87 = 189,617.00/x
  3. Step 3: Cross multiply
    342,578.61x = 472,728.87 × 189,617.00
  4. Step 4: Simplify right side
    342,578.61x = 89,637,427,779.15
  5. Step 5: Solve for x
    x = 89,637,427,779.15/342,578.61
  6. Step 6: Final answer
    x = 261,655.06

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.