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Finding the Fourth Proportional to 268,272.50, 370,215.90 and 147,421.58

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Solution

The fourth proportional to 268,272.50, 370,215.90 and 147,421.58 is: 203,441.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,272.50 : 370,215.90 = 147,421.58 : x
  2. Step 2: Convert to fraction form
    268,272.50/370,215.90 = 147,421.58/x
  3. Step 3: Cross multiply
    268,272.50x = 370,215.90 × 147,421.58
  4. Step 4: Simplify right side
    268,272.50x = 54,577,811,068.04
  5. Step 5: Solve for x
    x = 54,577,811,068.04/268,272.50
  6. Step 6: Final answer
    x = 203,441.69

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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.