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Finding the Fourth Proportional to 251,643.90, 377,477.70 and 74,152.45

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Solution

The fourth proportional to 251,643.90, 377,477.70 and 74,152.45 is: 111,232.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,643.90 : 377,477.70 = 74,152.45 : x
  2. Step 2: Convert to fraction form
    251,643.90/377,477.70 = 74,152.45/x
  3. Step 3: Cross multiply
    251,643.90x = 377,477.70 × 74,152.45
  4. Step 4: Simplify right side
    251,643.90x = 27,990,896,275.37
  5. Step 5: Solve for x
    x = 27,990,896,275.37/251,643.90
  6. Step 6: Final answer
    x = 111,232.17

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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.