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Finding the Fourth Proportional to 315,585.99, 435,510.27 and 172,346.03

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Solution

The fourth proportional to 315,585.99, 435,510.27 and 172,346.03 is: 237,838.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,585.99 : 435,510.27 = 172,346.03 : x
  2. Step 2: Convert to fraction form
    315,585.99/435,510.27 = 172,346.03/x
  3. Step 3: Cross multiply
    315,585.99x = 435,510.27 × 172,346.03
  4. Step 4: Simplify right side
    315,585.99x = 75,058,465,514.34
  5. Step 5: Solve for x
    x = 75,058,465,514.34/315,585.99
  6. Step 6: Final answer
    x = 237,838.40

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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.