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Finding the Fourth Proportional to 299,278.89, 448,926.07 and 86,038.18

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Solution

The fourth proportional to 299,278.89, 448,926.07 and 86,038.18 is: 129,059.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,278.89 : 448,926.07 = 86,038.18 : x
  2. Step 2: Convert to fraction form
    299,278.89/448,926.07 = 86,038.18/x
  3. Step 3: Cross multiply
    299,278.89x = 448,926.07 × 86,038.18
  4. Step 4: Simplify right side
    299,278.89x = 38,624,782,017.35
  5. Step 5: Solve for x
    x = 38,624,782,017.35/299,278.89
  6. Step 6: Final answer
    x = 129,059.50

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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.