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Finding the Fourth Proportional to 472,111.93, 651,521.91 and 257,251.87

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Solution

The fourth proportional to 472,111.93, 651,521.91 and 257,251.87 is: 355,011.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,111.93 : 651,521.91 = 257,251.87 : x
  2. Step 2: Convert to fraction form
    472,111.93/651,521.91 = 257,251.87/x
  3. Step 3: Cross multiply
    472,111.93x = 651,521.91 × 257,251.87
  4. Step 4: Simplify right side
    472,111.93x = 167,605,229,693.47
  5. Step 5: Solve for x
    x = 167,605,229,693.47/472,111.93
  6. Step 6: Final answer
    x = 355,011.64

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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.