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Finding the Fourth Proportional to 426,802.77, 640,233.32 and 127,260.32

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Solution

The fourth proportional to 426,802.77, 640,233.32 and 127,260.32 is: 190,899.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,802.77 : 640,233.32 = 127,260.32 : x
  2. Step 2: Convert to fraction form
    426,802.77/640,233.32 = 127,260.32/x
  3. Step 3: Cross multiply
    426,802.77x = 640,233.32 × 127,260.32
  4. Step 4: Simplify right side
    426,802.77x = 81,476,293,340.39
  5. Step 5: Solve for x
    x = 81,476,293,340.39/426,802.77
  6. Step 6: Final answer
    x = 190,899.17

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1.5x scale

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.