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Finding the Fourth Proportional to 448,213.72, 618,534.95 and 247,009.72

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Solution

The fourth proportional to 448,213.72, 618,534.95 and 247,009.72 is: 340,873.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,213.72 : 618,534.95 = 247,009.72 : x
  2. Step 2: Convert to fraction form
    448,213.72/618,534.95 = 247,009.72/x
  3. Step 3: Cross multiply
    448,213.72x = 618,534.95 × 247,009.72
  4. Step 4: Simplify right side
    448,213.72x = 152,784,144,809.71
  5. Step 5: Solve for x
    x = 152,784,144,809.71/448,213.72
  6. Step 6: Final answer
    x = 340,873.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.