Home / 283,947.20-425,920.80-213,088.40

Finding the Fourth Proportional to 283,947.20, 425,920.80 and 213,088.40

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Solution

The fourth proportional to 283,947.20, 425,920.80 and 213,088.40 is: 319,632.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,947.20 : 425,920.80 = 213,088.40 : x
  2. Step 2: Convert to fraction form
    283,947.20/425,920.80 = 213,088.40/x
  3. Step 3: Cross multiply
    283,947.20x = 425,920.80 × 213,088.40
  4. Step 4: Simplify right side
    283,947.20x = 90,758,781,798.72
  5. Step 5: Solve for x
    x = 90,758,781,798.72/283,947.20
  6. Step 6: Final answer
    x = 319,632.60

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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.