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Finding the Fourth Proportional to 299,312.90, 448,579.47 and 121,612.16

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Solution

The fourth proportional to 299,312.90, 448,579.47 and 121,612.16 is: 182,259.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,312.90 : 448,579.47 = 121,612.16 : x
  2. Step 2: Convert to fraction form
    299,312.90/448,579.47 = 121,612.16/x
  3. Step 3: Cross multiply
    299,312.90x = 448,579.47 × 121,612.16
  4. Step 4: Simplify right side
    299,312.90x = 54,552,718,278.36
  5. Step 5: Solve for x
    x = 54,552,718,278.36/299,312.90
  6. Step 6: Final answer
    x = 182,259.83

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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.