Home / 304,765.28-420,783.90-190,088.72

Finding the Fourth Proportional to 304,765.28, 420,783.90 and 190,088.72

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Solution

The fourth proportional to 304,765.28, 420,783.90 and 190,088.72 is: 262,452.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,765.28 : 420,783.90 = 190,088.72 : x
  2. Step 2: Convert to fraction form
    304,765.28/420,783.90 = 190,088.72/x
  3. Step 3: Cross multiply
    304,765.28x = 420,783.90 × 190,088.72
  4. Step 4: Simplify right side
    304,765.28x = 79,986,272,947.61
  5. Step 5: Solve for x
    x = 79,986,272,947.61/304,765.28
  6. Step 6: Final answer
    x = 262,452.05

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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.