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Finding the Fourth Proportional to 577,108.71, 865,706.55 and 172,268.93

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Solution

The fourth proportional to 577,108.71, 865,706.55 and 172,268.93 is: 258,416.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,108.71 : 865,706.55 = 172,268.93 : x
  2. Step 2: Convert to fraction form
    577,108.71/865,706.55 = 172,268.93/x
  3. Step 3: Cross multiply
    577,108.71x = 865,706.55 × 172,268.93
  4. Step 4: Simplify right side
    577,108.71x = 149,134,337,953.40
  5. Step 5: Solve for x
    x = 149,134,337,953.40/577,108.71
  6. Step 6: Final answer
    x = 258,416.37

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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.