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Finding the Fourth Proportional to 315,484.30, 435,366.06 and 172,244.34

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Solution

The fourth proportional to 315,484.30, 435,366.06 and 172,244.34 is: 237,695.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,484.30 : 435,366.06 = 172,244.34 : x
  2. Step 2: Convert to fraction form
    315,484.30/435,366.06 = 172,244.34/x
  3. Step 3: Cross multiply
    315,484.30x = 435,366.06 × 172,244.34
  4. Step 4: Simplify right side
    315,484.30x = 74,989,339,663.10
  5. Step 5: Solve for x
    x = 74,989,339,663.10/315,484.30
  6. Step 6: Final answer
    x = 237,695.95

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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.