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Finding the Fourth Proportional to 577,258.65, 865,737.32 and 172,356.26

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Solution

The fourth proportional to 577,258.65, 865,737.32 and 172,356.26 is: 258,489.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,258.65 : 865,737.32 = 172,356.26 : x
  2. Step 2: Convert to fraction form
    577,258.65/865,737.32 = 172,356.26/x
  3. Step 3: Cross multiply
    577,258.65x = 865,737.32 × 172,356.26
  4. Step 4: Simplify right side
    577,258.65x = 149,215,241,427.16
  5. Step 5: Solve for x
    x = 149,215,241,427.16/577,258.65
  6. Step 6: Final answer
    x = 258,489.40

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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.