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Finding the Fourth Proportional to 280,482.40, 420,712.80 and 93,493.90

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Solution

The fourth proportional to 280,482.40, 420,712.80 and 93,493.90 is: 140,237.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,482.40 : 420,712.80 = 93,493.90 : x
  2. Step 2: Convert to fraction form
    280,482.40/420,712.80 = 93,493.90/x
  3. Step 3: Cross multiply
    280,482.40x = 420,712.80 × 93,493.90
  4. Step 4: Simplify right side
    280,482.40x = 39,334,080,451.92
  5. Step 5: Solve for x
    x = 39,334,080,451.92/280,482.40
  6. Step 6: Final answer
    x = 140,237.25

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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.