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Finding the Fourth Proportional to 299,386.20, 448,423.20 and 260,020.20

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Solution

The fourth proportional to 299,386.20, 448,423.20 and 260,020.20 is: 389,460.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,386.20 : 448,423.20 = 260,020.20 : x
  2. Step 2: Convert to fraction form
    299,386.20/448,423.20 = 260,020.20/x
  3. Step 3: Cross multiply
    299,386.20x = 448,423.20 × 260,020.20
  4. Step 4: Simplify right side
    299,386.20x = 116,599,090,148.64
  5. Step 5: Solve for x
    x = 116,599,090,148.64/299,386.20
  6. Step 6: Final answer
    x = 389,460.47

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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.