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Finding the Fourth Proportional to 448,038.40, 672,057.60 and 199,206.40

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Solution

The fourth proportional to 448,038.40, 672,057.60 and 199,206.40 is: 298,809.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,038.40 : 672,057.60 = 199,206.40 : x
  2. Step 2: Convert to fraction form
    448,038.40/672,057.60 = 199,206.40/x
  3. Step 3: Cross multiply
    448,038.40x = 672,057.60 × 199,206.40
  4. Step 4: Simplify right side
    448,038.40x = 133,878,175,088.64
  5. Step 5: Solve for x
    x = 133,878,175,088.64/448,038.40
  6. Step 6: Final answer
    x = 298,809.60

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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.