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Finding the Fourth Proportional to 315,151.23, 472,730.95 and 104,789.16

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Solution

The fourth proportional to 315,151.23, 472,730.95 and 104,789.16 is: 157,185.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,151.23 : 472,730.95 = 104,789.16 : x
  2. Step 2: Convert to fraction form
    315,151.23/472,730.95 = 104,789.16/x
  3. Step 3: Cross multiply
    315,151.23x = 472,730.95 × 104,789.16
  4. Step 4: Simplify right side
    315,151.23x = 49,537,079,156.50
  5. Step 5: Solve for x
    x = 49,537,079,156.50/315,151.23
  6. Step 6: Final answer
    x = 157,185.10

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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.