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Finding the Fourth Proportional to 472,260.37, 651,719.81 and 257,400.61

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Solution

The fourth proportional to 472,260.37, 651,719.81 and 257,400.61 is: 355,213.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,260.37 : 651,719.81 = 257,400.61 : x
  2. Step 2: Convert to fraction form
    472,260.37/651,719.81 = 257,400.61/x
  3. Step 3: Cross multiply
    472,260.37x = 651,719.81 × 257,400.61
  4. Step 4: Simplify right side
    472,260.37x = 167,753,075,356.08
  5. Step 5: Solve for x
    x = 167,753,075,356.08/472,260.37
  6. Step 6: Final answer
    x = 355,213.11

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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.